Refine Your Ride with Precision Fittings
Experience exceptional Fittings that perfect every connection on your car. At HD Werks, our JDM collection delivers innovative design and precision engineering for aftermarket upgrades. Every fitting is engineered to meet the highest standards, channeling the spirit of Japanese craftsmanship and racing performance. Explore reliable designs and trusted parts that bring your ride together flawlessly. Our range offers both original and custom options tailored to your needs. Enjoy performance, JDM, accessories, custom, genuine quality with our premium Fittings selection.
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Vendor:HaltechHaltech Flex Fuel Fittings 3/8 (GM Spring Lock) to -6AN Male w/Two Fittings
Regular price $57.99Regular price$57.00Sale price $57.99 -
Vendor:HaltechHaltech Flex Fuel Composition Sensor for 3/8 (GM Spring Lock) Fittings w/Plug & Pins
Regular price $205.99Regular price$205.00Sale price $205.99 -
Vendor:HaltechHaltech 1/4in Stainless Compression 1/8in NPT Thread Fitting Kit w/Nut & Ferrule
Regular price $21.99Regular price$21.00Sale price $21.99 -
Vendor:HaltechHaltech 1/4in Stainless Steel Weld-On Kit w/Nut & Ferrule
Regular price $21.99Regular price$21.00Sale price $21.99 -
Vendor:HaltechHaltech 1/4in Stainless Steel Weld-On Base
Regular price $16.99Regular price$16.00Sale price $16.99 -
Vendor:HaltechHaltech 1/4in Mild Steel Weld-On Kit w/Nut & Ferrule
Regular price $21.99Regular price$21.00Sale price $21.99 -
Vendor:HaltechHaltech 1/4in Mild Steel Weld-On Base
Regular price $16.99Regular price$16.00Sale price $16.99 -
Vendor:HaltechHaltech O2 Sensor Weld-On Bung w/Copper Washer & Blanking Plug M18 x1.5
Regular price $16.99Regular price$16.00Sale price $16.99 -
Vendor:HaltechHaltech Weld Fitting M12 x 1.5 - Aluminum
Regular price $16.99Regular price$16.00Sale price $16.99 -
Vendor:HaltechHaltech Weld Fitting 3/8 NPT - Aluminum
Regular price $16.99Regular price$16.00Sale price $16.99 -
Vendor:HaltechHaltech Weld Fitting 1/8 NPT - 27 TPI 6061 Aluminum
Regular price $16.99Regular price$16.00Sale price $16.99 -
Vendor:HaltechHaltech Weld Fitting M14 x 1.5 - Aluminum
Regular price $16.99Regular price$16.00Sale price $16.99 -
-$0.51
Vendor:GReddyGReddy M18 Warning Oil Temp Sensor Fitting
Regular price $12.99Regular price$13.50-$0.51 Sale price $12.99 -
Sold outVendor:GReddy
GReddy-8AN Fuel Rail Fitting (for 13512303)
Regular price $17.99Regular price$18.00-$0.01 Sale price $17.99 -
Sold outVendor:GReddy
GReddy Direct 10AN Hose end Fitting Fitting 90 Degree ORing Seal
Regular price $65.99Regular price$69.00-$3.01 Sale price $65.99 -
Sold outVendor:GReddy
GReddy Direct 10AN Hose End Fitting 45in w/ O-Ring Seal
Regular price $61.99Regular price$65.00-$3.01 Sale price $61.99 -
Sold outVendor:GReddy
GReddy Direct 10AN Hose End Fitting 30in w/ O-Ring Seal
Regular price $61.99Regular price$65.00-$3.01 Sale price $61.99 -
Sold outVendor:GReddy
GReddy Direct 10AN Hose End Fitting Straight w/ O-Ring Seal
Regular price $28.99Regular price$30.00-$1.01 Sale price $28.99 -
Sold outVendor:GReddy
GReddy Male 1/8in PT to Male 1/8in PF Union Fitting
Regular price $8.99Regular price$9.00-$0.01 Sale price $8.99 -
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Vendor:TurbosmartTurbosmart FPR Adapter Audi/VW
Regular price $35.99Regular price$39.94-$3.95 Sale price $35.99 -
Vendor:Killer B Motorsport
Killer B Performance Turbo Stud Set (5)
Regular price $48.99Regular priceSale price $48.99 -
Sold outVendor:Killer B Motorsport
Killer B Fumoto Valve 20mm-1.5
Regular price $48.99Regular priceSale price $48.99 -
Vendor:Nitrous ExpressNitrous Express 97-04 Chevrolet Corvette C5 Power Steering Reservoir Spacer Kit
Regular price $65.99Regular priceSale price $65.99 -
-$5.62
Vendor:TurbosmartTurbosmart Boost Reference Adapter Mini Cooper S / R56 Renault Clio RS - Black
Regular price $50.99Regular price$56.61-$5.62 Sale price $50.99 -
-$5.62
Vendor:TurbosmartTurbosmart Boost Reference Adapter 13-16 Ford F-150 3.5L Ecoboost - Silver
Regular price $50.99Regular price$56.61-$5.62 Sale price $50.99 -
-$5.62
Vendor:TurbosmartTurbosmart 2015+ Ford Mustang Ecoboost Boost Reference Adapter - Black
Regular price $50.99Regular price$56.61-$5.62 Sale price $50.99 -
-$5.62
Vendor:TurbosmartTurbosmart Boost Reference Adapter Ford 09+ Fiesta/Focus Ecoboost - Black
Regular price $50.99Regular price$56.61-$5.62 Sale price $50.99 -
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Vendor:TurbosmartTurbosmart FPR Adapter Honda
Regular price $35.99Regular price$39.94-$3.95 Sale price $35.99 -
-$3.29
Vendor:TurbosmartTurbosmart FPR Adapter Subaru/Nissan/Mazda
Regular price $29.99Regular price$33.28-$3.29 Sale price $29.99 -
Vendor:Torque SolutionTorque Solution 15+ Subaru WRX / 14+ Forester XT Turbo Sump Restrictor
Regular price $41.99Regular priceSale price $41.99 -
-$0.96
Vendor:Radium EngineeringRadium Engineering 2015+ WRX, 2013+ BRZ/FR-S PCV Valve Replacement 3/8BSPT to 10AN MALE
Regular price $18.99Regular price$19.95-$0.96 Sale price $18.99 -
-$0.96
Vendor:Radium EngineeringRadium Engineering M14 Inverted Flare to 6AN Adapter Fitting - Honda Style
Regular price $23.99Regular price$24.95-$0.96 Sale price $23.99 -
-$2.96
Vendor:Radium EngineeringRadium Engineering 10AN Male Swivel Banjo 13.5mm Press Fit Fitting
Regular price $56.99Regular price$59.95-$2.96 Sale price $56.99 -
-$2.96
Vendor:Radium EngineeringRadium Engineering 10AN Male Swivel Banjo 18.0mm Press Fit Fitting
Regular price $56.99Regular price$59.95-$2.96 Sale price $56.99 -
-$0.96
Vendor:Radium EngineeringRadium Engineering M14 Inverted Flare to 6AN Adapter Fitting - Mitsubishi Style
Regular price $23.99Regular price$24.95-$0.96 Sale price $23.99