Robust Engine Internals
Boost your vehicle’s power from within with our JDM Engine & Power - Engine Internals from HD Werks. Designed for high-performance and durability, these original aftermarket parts are engineered in Japan for racing excellence. Infused with DOHC precision and inspired by Honda and Toyota innovation, our engine internals deliver unmatched power and reliability. Shop our collection for components that ensure your engine performs optimally, enhancing efficiency and driving excitement. Experience the difference of superior craftsmanship and authentic JDM engineering.
Skip to product grid
-
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T (.001+) Exhaust Valve Guide Stopper Style (Single)
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T Manganese Bronze Intake Valve Guide +.003in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T Manganese Bronze Intake Valve Guide +.001in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T Manganese Bronze Intake Valve Guide - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
Sold out
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T Manganese Bronze Exhaust Valve Guide +.003in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
Sold out
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T Manganese Bronze Exhaust Valve Guide +.001in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4B11T Manganese Bronze Exhaust Valve Guide - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$11.54Vendor:GSC Power Division
GSC P-D Subaru EG33 Manganese Bronze Intake Valve Guide - Set 12
Regular price $65.99Regular price$77.53-$11.54 Sale price $65.99 -
Sold outVendor:GSC Power Division
GSC P-D Subaru EG33 Manganese Bronze Intake Valve Guide - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$11.54Vendor:GSC Power Division
GSC P-D Subaru EG33 Manganese Bronze Exhaust Valve Guide - Set 12
Regular price $65.99Regular price$77.53-$11.54 Sale price $65.99 -
Sold outVendor:GSC Power Division
GSC P-D Subaru EG33 Manganese Bronze Exhaust Valve Guide - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$5.78Vendor:GSC Power Division
GSC P-D Ski Doo 1.800in Length 0.4760in OD 0.2598in ID Intake Valve Guide Set - Set of 6
Regular price $32.99Regular price$38.77-$5.78 Sale price $32.99 -
-$5.78Vendor:GSC Power Division
GSC P-D Ski Doo 1.800in Length 0.4760in OD 0.2598in ID Exhaust Valve Guide Set - Set of 6
Regular price $32.99Regular price$38.77-$5.78 Sale price $32.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D 4G63 Manganese Bronze Exhaust Valve Guide Shorty Stopper .003in Oversize - SINGLE
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Exhaust Valve Guide Shorty Stopper +.001in OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63 Manganese Bronze Exhaust Valve Guide Shorty Stopper - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63 (.003+) Stopper Style Intake (Single)
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63 (.001+) Stopper Style Intake - (Single)
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Intake Valve Guide Stopper Style - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
Sold out
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Exhaust Valve Guide Stopper Style +.003in OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Exhaust Valve Guide Stopper Style +.001in OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Exhaust Valve Guide Stopper Style - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Intake Valve Guide +.001in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Intake Valve Guide +.003in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Intake Valve Guide - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Exhaust Valve Guide +.003in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Manganese Bronze Exhaust Valve Guide +.001in Oversize OD - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$0.72
Vendor:GSC Power DivisionGSC P-D 4G63T Evo 4-9 OD .4750in ID .2598in OL 1.950in Exhaust Valve Guide - Single
Regular price $5.99Regular price$6.71-$0.72 Sale price $5.99 -
-$10.01
Vendor:GSC Power DivisionGSC P-D Ford Mustang 5.0L Gen 3 Coyote Valve Stem Seal w/Integrated Spring Seat - Set of 32
Regular price $59.99Regular price$70.00-$10.01 Sale price $59.99 -
-$10.01
Vendor:GSC Power DivisionGSC P-D Ford Mustang 5.0L Coyote Valve Stem Seal w/Integrated Spring Seat - Set of 32
Regular price $59.99Regular price$70.00-$10.01 Sale price $59.99 -
-$3.81
Vendor:GSC Power DivisionGSC P-D Toyota Supra/BMW B58/N54/S55/S58 Viton Intake Valve Stem Seals - Set of 12
Regular price $26.99Regular price$30.80-$3.81 Sale price $26.99 -
-$4.13
Vendor:GSC Power DivisionGSC P-D Nissan VK56 Viton 6mm Valve Stem Seals - Set of 32
Regular price $28.99Regular price$33.12-$4.13 Sale price $28.99 -
-$3.81
Vendor:GSC Power DivisionGSC P-D Toyota Supra/BMW B58/N54/S55/S58 Viton Exhaust Valve Stem Seals - Set of 12
Regular price $26.99Regular price$30.80-$3.81 Sale price $26.99 -
-$4.01
Vendor:GSC Power DivisionGSC P-D 93-07 Dodge Viper Viton Valve Stem Seals - Set of 20
Regular price $28.99Regular price$33.00-$4.01 Sale price $28.99 -
Sold out
Vendor:GSC Power DivisionGSC P-D 2023+ Nissan 400Z VR30DDTT Valve Stem Seal - Set of 24
Regular price $21.99Regular price$24.84-$2.85 Sale price $21.99
