Autolite 4123 Cross ReferenceShop our complete selection of Harley Motorcycle parts and accessories including the Autolite Spark Plug - 4123. Torque specificatons: Cast Iron: 26-29 lb-ft; Aluminum: 15-22 lb-ft: Projection: Projected: Resistor: 5 000 Ω: Seat Type: Gasket: Hex Size: 13/16" (21 mm)13/16" (21 mm) Center Electrode Ground Electrode; Material. 25 Hex Size (mm): 21mm Compare Autolite Iridium XP Spark Plug - XP666 Part #: XP666 Line: ATO 0. Possible replacement spark plugs for AUTOLITE - 4164. The cross references are for general reference only, please check for correct specifications and measurements for your application. The cross references are for general reference only, please check for correct specifications and measurements for your application. 8mm finewire, multi-electrode design and standard plugs. 78 Autolite Power Sport Spark Plug, 4194, for Honda, Kawasaki, Yamaha and Polaris 71 Pickup Best seller $4. com FREE DELIVERY on eligible purchases over $50 AUTOLITE 4123 Cross Reference. 138 replacement spark plugs for AUTOLITE 4123 AUTOLITE 4123 - Cross Reference | th. Autolite Iridium XP utilizes an iridium-enhanced finewire and proprietary platinum sidewire for improved durability* and a more focused ignition for better overall ignitability**. Autolite Iridium XP Spark Plug - XP5684 Part #: XP5684 Line: ATO 2. Autolite Iridium XP Spark Plug - XP5684 Part #: XP5684 Line: ATO 2. Autolite Copper Core Spark Plug - 4123 Part # 4123 Line: ATO 4. Half Thread/Full Thread Explanation. The cross references are for general reference only, please check for correct specifications and measurements for your application. Shop our complete selection of Harley Motorcycle parts and accessories including the Autolite Spark Plug - 4123. Autolite 4123 Copper Resistor Automotive Replacement Spark Plug (1 Pack) USD 2. Spark Plug Interchange Guide. the XS have a fine wire and have proven great in my Pan. V -Twin Café provides a spark plug application and interchange chart for Harley-Davidson motorcycles, including Twin Cam,. spark plug cross reference; gm_number champ champ_stk ac_delco accel autolite beck/arnley blue_crown bosch bosch_stk lodge mighty mopar_(new motorcraft mtrcfstk napa nd_stk nd_p/n nd irid stk nd irid p/n ngk_p/n ngk_stk ngk alt ngk_model prestolite splitfire stitt torch valley_for other mfg+pn plug comment type seat_type thread_siz reach hex. Do I leave the gap set of the plug i'm using? Howie Howie Reply Save Like 1 - 8 of 8 Posts. Autolite Spark Plug - 4123 Harley Motorcycle - Dennis Kirk. Autolite Copper Core Spark Plug - 4123 Part # 4123 Line: ATO 4. V -Twin Café provides a spark plug application and interchange chart for Harley-Davidson motorcycles, including Twin Cam, Evolution, Shovelhead and Sportster engines Spark Plugs for Twin Cam Engines. LOT Autolite Spark Plugs 66 86 124 605 606 765. NGK Spark Plug Cross Reference Guide. We also share information about your use of our site with our social media, advertising and analytics partners. ngk_p/n: ngk alt: accel: ac_delco: autolite: beck/arnley: blue_crown: bosch_stk. Buy AUTOLITE 4123 Copper Resistor Spark Plug on FinditParts. spark plug, sparkplugs, AUTOLITE, CHAMPION, AC DELCO, AC PLUGS, ACCEL, ACURA, AJK, ALFA ROMEO, AUDI, BERU, BMW, BOSCH, BRISK, CHRYSLER, CITROEN, DAEWOO, DAIHATSU. Spark Plug Charts Quick Reference for Most Engines This information has been verified form several sources, however, it is always best to consult the Harley service manual and the spark plug manufacturer data. Autolite 4123 - Alternative spark plugs There are 138 replacement spark plugs for Autolite 4123. Autolite: Part # 4123: Gap: 0. V -Twin Café provides a spark plug application and interchange chart for Harley-Davidson motorcycles, including Twin Cam, Evolution, Shovelhead and Sportster engines. Refer to recommendation section for specific engine applications. There are 150 replacement spark plugs for Autolite 4163. SEE MORE RESOURCES Want to get detailed and technical?. Available at CarSparkPlugs. ATLAS (1) AUTOLITE (165) BERU (509) BMW (2). Performance and Technical information on spark plugs for Harley-Davidson motorcycles. Harley- Davidson Engine Performance Spark Plugs Performance and Technical information on spark plugs for Harley-Davidson motorcycles. Parts Finder Parts Finder Wizard One at a time, enter your YEAR, MAKE, MODEL or Autolite part number, and we'll begin searching our database for compatible parts. Autolite Iridium XP utilizes an iridium-enhanced finewire and proprietary platinum sidewire for improved durability* and a more focused ignition for better overall ignitability** providing optimum performance. NOTE:Cross references are provided as a guide only. Autolite : 4123 : Bosch : W225T7 The Spark Plug Cross references are for general reference only. 2 mm Hex size: 16 mm NGK 4123 replacement spark plugs Accel 566 ACDelco MR44T ACDelco R44T ACDelco R44TX ACDelco R45T ACDelco R46T ACDelco R46TX. 99 Champion Spark Plug RL82YC for Polaris PREDATOR 50 2004-2006 USD 14. 0 (2) Check Vehicle Fit Select a store to see pricing & availability or search by City & State or Zip: Find Limited Lifetime Warranty Seat: Flat Thread Size: M12-1. The cross references are for general reference only, please check for correct specifications and measurements for your application. The Spark Plug Cross references are for general reference only. Due to differences in design and material, plugs produced by various manufacturers do not have. Now with a lifetime limited warranty. 028") Heat Range: 4 (-) Thread: 14 mm x 1. need help choosing correct spark plug for my 66 shovelhead. Number of Items: 1 About this item. SHOP AUTOLITE® SPARK PLUGS Popular Brands. May not be valid if ordered online. 16 RL82YC SPARK PLUG, Pack of 8 USD 38. Part Number: 4123. 29 Denso IWF20 Iridium Plug USD 8. Cross Reference Chart. Now available as an android app from Google Play. Find the Autolite Spark Plug - 4123 at Dennis Kirk. spark plug no. · #10 · Apr 20, 2011 (Edited) AUTOLITE XS85 or 4275 for 66 Shovel with 3/8 short reach plugs. Autolite Iridium XP utilizes an iridium-enhanced finewire and proprietary platinum sidewire for improved durability* and a more focused ignition for better overall ignitability** providing optimum performance. Possible replacement spark plugs for AUTOLITE - 4123. 25 Hex Size (mm): 14mm Compare Autolite Iridium XP Spark Plug - XP5701 Part #: XP5701 Line: ATO 4. Autolite 4123 Copper Resistor Automotive Replacement Spark Plug (1 Pack) USD 2. AC Spark Plug, Autolite Preview 3 hours ago This cross - reference numbers furnished as a guide. 7 51 ratings -23% $229 List Price: $2. Autolite Small Engine Spark Plug, 254 for Select Chainsaws. Autolite: Part # 4123: Gap: 0. Parts Finder Wizard One at a time, enter your YEAR, MAKE, MODEL or Autolite part number, and we'll begin searching our database for compatible parts. Les ingénieurs Autolite ont travaillé de près avec les constructeurs de moteurs et ont conçu des bougies aux gammes thermiques aussi nombreuses que variées afin de satisfaire à toutes les applications des moteurs. Example a R5671A-7 (a good street/strip plug) is a cold plug where a R5671A-10 is a very cold plug used for large 400hp and up nitrous and other power adder applications). NOTE:Cross references are provided as a guide only. 138 replacement spark plugs for AUTOLITE 4123 AUTOLITE 4123 - Cross. Principal Applications & Specifications Utilisations et spe. 29 QL78YC SPARK PLUG, Pack of 4 USD 16. Autolite Spark Plug - 4123 Harley Motorcycle - Dennis Kirk. The cross references are for general reference only, please check for correct. io">Autolite 4123 Spark Plug Cross Reference. Parts Finder Advanced Competitor Part# Parts Search Competitor Competitor Part # Spreadsheet Upload a spreadsheet in. You can count on Autolite copper plugs for performance and value, backed by decades of experience and passion. Racing Cross Reference Chart. As the number one manufacturer of ignition products in North America, Autolite® manufactures ignition products, including spark plugs and glow plugs, for domestic and import automobiles; as well as spark plugs for lawn & garden and powersports that meet or exceed OE fit and function requirements. Autolite Spark Plug # 4123 Stock photo shown, actual item may vary by model Price: $ 3. Autolite 124-4PK Copper Resistor Spark Plug, Pack of 4. • 3700 Paragon Drive - Columbus, Ohio 43228 • p: (800) 554-3336 e: info@PowerDistributors. Autolite 4123 Copper Resistor Automotive Replacement Spark Plug (1 Pack) Visit the Autolite Store 50 ratings Number of Items: 1 About this item MAXIMUM PERFORMANCE: Every Copper Spark Plug has a full copper core electrode which provides higher thermal conductivity for better performance in all conditions. Autolite 4123 Spark Plug Cross Reference. com">Autolite Spark Plug 4123. Autolite - Home FIND YOUR PART AUTOMOTIVE RACING SPORT LAWN & GARDEN FIND YOUR PART Need help? Use the part finder to see all the performance options available for your engine! FIND YOUR PART MOTORSPORTS Stay connected with top Autolite sponsored teams and events throughout the country. Autolite Spark Plug - 4123 Harley Motorcycle - Dennis Kirk www. 2mm Seat type: tapered Hex size: 16mm Tip configuration: non projected Construction: Standard construction Terminal type: Solid. That's why it's important to stick to OE gap sizes. The spark plug Cross References are for general reference only. Autolite Copper Spark Plug 124 Lot of 8 NOS. Any use of this cross reference is done at the installers risk. Autolite : 283 : Autolite 4123 : Bosch : W225T7 The Spark Plug Cross references are for general reference only. 138 replacement spark plugs for AUTOLITE 4123 AUTOLITE 4123 - Cross Reference | uk. com 800-969-7501 Contact us: 800-969-7501 As low as 0% APR for 12 months with Dennis Kirk Inc. autolite ®® technical information ar12 12 rv9yc r5674-7 ar13 13 rv9yc r5674-6 ar23 – rv9yc bpr6fs ar24 – rv12yc bpr6fs ar25 – rv15yc4 ur4 ar32 32 rf9yc ap8fs ar33 33 rf9yc ap7fs ar50 50 n59yd r5672a-10 ar51 51 n61yd/n6yc r5672a-9 ar52 52 n63yd/n7yc r5672a-8 ar53 53 n9yc bp6es ar72 72 j12yc r5670-7. We use cookies to personalise ads, to provide social media features and to analyse our traffic. There are 53 replacement spark plugs for Autolite 4316. on orders over $25 NGK Cross Reference: BP4H. Shop Online: 1x NGK Copper Core Spark Plug BPR6HS (7022) Availability: in stock. Autolite: Part # 4123: Gap: 0. SPARK PLUG CROSS REFERENCE. Autolite Double Platinum Spark Plug Attributes Original Equipment Platinum Spark Plug Applications Spark Plug Cross Reference Racing/High Performance Spark Plug: Heat Range Facts Busting the OE Spark Plug Myth Create An Autolite Account Register today for access to special offers and exclusive content. CSV format with multiple part numbers. Specifications for NGK 4123. Shop our complete selection of Harley Motorcycle parts and accessories including the Autolite Spark Plug - 4123. Autolite: Vendor Reference: 4123: Price: $ 3. The cross references are for general reference only, please check for correct specifications and measurements for your application. principal application thread diameter reach hex seat tip resistor/ non-resistor/ suppressor heat range chart special features pop numÉro de bougie. 15 USD QTY: Normally ships in 1 business days This item qualifies for on orders over $25 some restrictions apply Details Specs Fitment Created to provide a sharper, leaner spark Tapered nickel/chrome alloy tip and copper center electrode Sold each. 5mm Seat type: flat Hex size: 19mm Tip configuration: projected Construction: Special design Terminal type: Removable NGK BPM7A replacement spark plugs. Bigger gap creates bigger spark, which ignite more fuel. 0mm Resistor Type Spark Gap – Motorcycle : 0. 1x Champion Copper Plus Spark Plug RA6HC. Torque specificatons: Cast Iron:. Autolite Copper Core Spark Plug Attributes. Autolite Copper Core Spark Plug 4123. NGK Cross Reference: BP4H BP4HA BP4HS. 4123-4123-4123 - 1237-AUTOLITE - 1231-NGK - Spark plug cross reference AUTOLITE Part Number: 4123 Cross Reference Spark Plug Referenced From NGK Catalogue Possible replacement spark plugs for AUTOLITE - 4123 NGK Part Number: BPR6HS Shop Online NGK Spark Plugs. Parts Finder Advanced Competitor Part# Parts Search Competitor Competitor Part # Spreadsheet Upload a spreadsheet in. AC Delco to NGK Heat Range Reference NGK Heat Ranges - The larger the number after the dash the colder the plug is. The cross references are for general reference only, please check for correct. Heat-fused glass composite resistor center seal provides high performance EMI noise suppression and a 100 percent leak-proof seal. Autolite Spark Plugs Chart. Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. Solid copper core center electrode. Autolite 4123 Spark Plug Cross Reference Autolite 4123 Nickel Spark Plug View on Characteristics Reference Gap Gap is a distance between center and ground electrodes. Cross Reference Spark Plug. Autolite Small Engine Spark Plug, 456 for Select Tecumseh Engine Power Equipment 71 3+ day shipping Customers also considered $8. Spark Plug Autolite 4316 USD 5. 8 (4) Write a review Ask a question Check Vehicle Fit Select a store to see pricing & availability or search by City &. 15 USD QTY: Normally ships in 1 business days. Shop our complete selection of Harley Motorcycle parts and accessories including the Autolite Spark Plug - 4123. Autolite 4123 Copper Resistor Automotive Replacement Spark Plug (1 Pack) USD 2. The HD original plug is speced @a gap of (. 85 Advanced search Choose brandname and start typing model number. Harley Spark Plug Cross-Reference Below is a cross-reference list of spark plugs for use in most Harley models. Cross reference sparkplugs for your Harley Davidson across major sparkplug manufacturers. Autolite Copper Core Spark Plug - 4123 Part # 4123 Line: ATO 4. 30 Champion Copper Plus Small Engine 327 Spark Plug (Carton of 1) - RL87YC for 1978-1979 Renault LeCar USD 12. 138 replacement spark plugs for AUTOLITE 4123 AUTOLITE 4123 - Cross Reference | th. Autolite 4123 Copper Resistor Automotive Replacement Spark Plug (1 Pack). Specifications for NGK 4123 Thread diameter: 14. Copper; Tapered electrode design; Pre-Set Gap: 0. ngk_stk. Shop our complete selection of Harley Motorcycle parts and accessories including the Autolite Spark Plug - 4123. Not responsible for typographical errors. There are 85 replacement spark plugs for Autolite 4173. Harley Spark Plug Cross-Reference Below is a cross-reference list of spark plugs for use in most Harley models. Best part is most chain stores like Meijer have em on the shelf cause they cross refernec for lawnmowers and other small engines. Autolite Iridium XP utilizes an iridium-enhanced finewire and proprietary platinum sidewire for improved durability* and a more focused ignition for better overall ignitability** providing optimum performance. Autolite 4123 replacement spark plugs Accel 156 Accel 453 ACDelco R42CFS ACDelco R42FS ACDelco R43CFS ACDelco R43FS. 65 Denso IWF20 Iridium Power Spark Plugs 5378-4. Autolite Spark Plug # 4123 Stock photo shown, actual item may vary by model Price: $ 3. com We use cookies to personalise ads, to provide social media features and to analyse our traffic. Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. While the motor company only recommends use of their original equipment Harley brand spark plugs, the other brands often exceed original specification and will not void your warranty. Available at The Green Spark Plug Co. Autolite 4123 Nickel Spark Plug View on Characteristics Reference Gap Gap is a distance between center and ground electrodes. Check for correct application and spec/measurements. 4 Platinum Spark Plugs Bosch For 1979-1983 FIAT 124 L4-2. Autolite 4123 Nickel Spark Plug View on Characteristics Reference Gap Gap is a distance between center and ground electrodes. Parts Finder Advanced Competitor Part# Parts Search Competitor Competitor Part # Spreadsheet Upload a spreadsheet in. Parts Finder Wizard One at a time, enter your YEAR, MAKE, MODEL or Autolite part number, and we'll begin searching our database for compatible parts. Autolite">Heat Range Chart Tableau des températures de. Autolite - Home FIND YOUR PART AUTOMOTIVE RACING SPORT LAWN & GARDEN FIND YOUR PART Need help? Use the part finder to see all the performance options available for your engine! FIND YOUR. autolite ®® technical information ar12 12 rv9yc r5674-7 ar13 13 rv9yc r5674-6 ar23 – rv9yc bpr6fs ar24 – rv12yc bpr6fs ar25 – rv15yc4 ur4 ar32 32 rf9yc ap8fs ar33 33 rf9yc ap7fs ar50 50 n59yd r5672a-10 ar51 51 n61yd/n6yc r5672a-9 ar52 52 n63yd/n7yc r5672a-8 ar53 53 n9yc bp6es ar72 72 j12yc r5670-7. Referenced From CHAMPION Catalogue. Autolite 4123 - Alternative spark plugs There are 138 replacement spark plugs for Autolite 4123. Autolite Copper Core Spark Plug - 4123 Part # 4123 Line: ATO 4. Autolite: Vendor Reference: 4123: Price: $ 3. 138 replacement spark plugs for AUTOLITE 4123 AUTOLITE 4123 - Cross Reference | uk. NGK 4123 replacement spark plugs. 9mm Upgrade to NGK Iridium-IX : YR5IX Denso : T16R-U Denso Iridium : Denso Iridium TOUGH : NGK BR5FS Convert Spark Plug Cross Reference AC-DELCO – MR44T AC-DELCO – R44T AC-DELCO – R44TX AC-DELCO – R45T AC-DELCO – R46T. Parts Finder Wizard One at a time, enter your YEAR, MAKE, MODEL or Autolite part number, and we'll begin searching our database for compatible parts. Simply select which Harley engine you have in the dropdown box, then select which sparkplug manufacturer you wish to use. We reserve the right to revise or cancel any promotion or price without prior notice. Shop Online: 1x Champion Copper Plus Spark Plug RA6HC: Availability: in stock. You can count on Autolite copper plugs for performance and value, backed by decades of experience and passion. 4123 4121 3/4" Reach Short (Courte/Corta) Projection Hex 5/8" (16mm) 20 Hot Chaud Caliente Cold/Froid/Frio 3949 3/4" Reach Short (Courte/Corta) Projection Hex 13/16" (21mm) 21 Hot Chaud Caliente 405 Cold/Froid/Frio 398 399 4056 404/2304 AP404 4055 403 XST4055 4054 XS4064 4063 XS4063 4062 XS4062 4051 4061 R O W R A N I G É E F L A. We have 113 alternatives for the 4123 by AUTOLITE: ACCEL 453; AC-DELCO R42FS; AC-DELCO R43CFS; AC-DELCO R43FS; BERU 14 R-7 BU; BOSCH W6B; BOSCH W7B;. NGK Cross Reference: BP4H BP4HA BP4HS BP4HS-10 BP5HA BP5HS BP6HS BP6HS-10 BP6HVX BP7HS BP7HS-10 BP7HVX BPR4HS BPR4HS-10 BPR5HS BPR6HIX BPR6HS BPR6HS-10 BPR6HSA. Details; Specs; Fitment; Created to provide a sharper, leaner spark NGK Cross Reference: BP4H BP4HA BP4HS BP4HS-10 BP5HA BP5HS BP6HS BP6HS-10 BP6HVX BP7HS BP7HS-10 BP7HVX BPR4HS. See Also: Spa Templates Show details Spark Plugs Cross Reference No. PDF Cross Reference Chart. Parts Finder Parts Finder Wizard One at a time, enter your YEAR, MAKE, MODEL or Autolite part number, and we'll begin searching our database for compatible parts. 138 replacement spark plugs for AUTOLITE 4123. autolite ®® technical information ar12 12 rv9yc r5674-7 ar13 13 rv9yc r5674-6 ar23 - rv9yc bpr6fs ar24 - rv12yc bpr6fs ar25 - rv15yc4 ur4 ar32 32 rf9yc ap8fs ar33 33 rf9yc ap7fs ar50 50 n59yd r5672a-10 ar51 51 n61yd/n6yc r5672a-9 ar52 52 n63yd/n7yc r5672a-8 ar53 53 n9yc bp6es ar72 72 j12yc r5670-7. Due to differences in design and material, plugs produced by various manufacturers do not have exactly the same heat range. Part No : 4123 Heat Range : 5 Size: 14. Autolite 4123 replacement spark plugs Accel 156 Accel 453 ACDelco R42CFS ACDelco R42FS ACDelco R43CFS ACDelco R43FS. AUTOLITE 4123 Specifications; Center Electrode Core Material: Copper: Center Electrode Design: Standard: Center Electrode Tip Material: Nickel: Electrical Terminal Type:. Specifications for NGK BPM7A Thread diameter: 14mm Thread reach: 9. Harley Spark Plug Cross-Reference Below is a cross-reference list of spark plugs for use in most Harley models. SPARK PLUG LIST: SPARK PLUGS CROSS REFERENCE LIST …. Cross Reference Spark Plug. Specifications for NGK BR5FS Thread diameter: 14mm Thread reach: 11. Sparkplug Cross Reference Chart. Find the Autolite Spark Plug - 4123 at Dennis Kirk. Autolite 5924 Cross Reference Chart. - Alternative spark plugs. Find the Autolite Spark Plug - 4123 at Dennis Kirk. 0 (0) Check Vehicle Fit Select a store to see pricing & availability or search by City & State or Zip: Find Limited Lifetime Warranty Seat: Tapered Thread Size: M14-1. 99 Get Fast, Free Shipping with Amazon Prime FREE Returns Available at a lower price from other sellers that may not offer free Prime shipping. More Information for AUTOLITE 4123. Possible replacement spark plugs for AUTOLITE - 4123. Autolite Copper Core Spark Plug - 4123 Part # 4123 Line: ATO 4. autolite ®® technical information ar12 12 rv9yc r5674-7 ar13 13 rv9yc r5674-6 ar23 – rv9yc bpr6fs ar24 – rv12yc bpr6fs ar25 – rv15yc4 ur4 ar32 32 rf9yc ap8fs ar33 33 rf9yc ap7fs. Autolite 4123 - Alternative spark plugs There are 138 replacement spark plugs for Autolite 4123. I've been using Autolite spark 4164 plugs for years cross referenced from the original HD spark plug#. Parts Finder Wizard One at a time, enter your YEAR, MAKE, MODEL or Autolite part number, and we'll begin searching our database for compatible parts. com">Spark Plug Interchange Guide. PDF Racing Cross Reference Chart. Autolite : 4123 : Bosch : W225T7 The Spark Plug Cross references are for general reference only. On peut choisir parmi des bougies dont la gamme varie de FROIDE à MOYENNE et de CHAUDE à TRÈS CHAUDE. Autolite 4123 - Alternative spark plugs There are 138 replacement spark plugs for Autolite 4123. PERFORMANCE UPGRADE CROSSOVER CHART y. bosch: champ_stk: champ: gm_number: lodge: mighty: mopar_(new: motorcraft. (Click on button to download) Cross reference sparkplugs for your Harley Davidson across major. Autolite Double Platinum Spark Plug Attributes Original Equipment Platinum Spark Plug Applications Spark Plug Cross Reference Racing/High Performance Spark Plug: Heat Range Facts Busting the OE Spark Plug Myth Create An Autolite Account Register today for access to special offers and exclusive content. autolite ®® technical information ar12 12 rv9yc r5674-7 ar13 13 rv9yc r5674-6 ar23 – rv9yc bpr6fs ar24 – rv12yc bpr6fs ar25 – rv15yc4 ur4 ar32 32 rf9yc ap8fs ar33 33 rf9yc ap7fs ar50 50 n59yd r5672a-10 ar51 51 n61yd/n6yc r5672a-9 ar52 52 n63yd/n7yc r5672a-8 ar53 53 n9yc bp6es ar72 72 j12yc r5670-7. NOTE:Cross references are provided as a guide only. Understanding Autolite Spark Plug Numbering System. While the motor company only recommends use of their original. Autolite 4123 Copper Resistor Automotive Replacement Spark Plug (1 Pack) Visit the Autolite Store 4. Racing Spark Plug Cross Reference Chart. The cross references are for general reference only, please check for correct specifications and measurements for your application. As the number one manufacturer of ignition products in North America, Autolite® manufactures ignition products, including spark plugs and glow plugs, for domestic and import automobiles; as well as spark plugs for lawn & garden and powersports that meet or exceed OE fit and function requirements. 8 (4) Write a review Ask a question Check Vehicle Fit Select a store to see pricing & availability or search by City & State or Zip: Details Product Information Warranty: 1 Year Limited Warranty Unit of Measure: Each UPC: # 9100254948 Seat: Flat Thread Size: M14 Hex Size (mm): 21mm. On the other hand, bigger spark is harder to occur and has more chances to misfire. Specifications for NGK BPR7HS Thread. The application then shows the part number for the correct sparkplug for use in your bike. Harley- Davidson Engine Performance Spark Plugs Performance and Technical information on spark plugs for Harley-Davidson motorcycles. PERFORMANCE UPGRADE CROSSOVER CHART. The gap I've measured from the Autolite 4164 spark plug is (. 7 mm (1/2") Longevity: 30 000 mi. That’s why it’s important to stick to OE gap sizes. Autolite 4123 Copper Resistor Automotive Replacement Spark ….