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.
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Vendor:SupertechSupertech 7mm Stem 10.6mm Guide OD Valve Stem Seal - Single (Drop Ship Only)
Regular price $1.99Regular price$1.22Sale price $1.99 -
-$1.75
Vendor:SupertechSupertech Nissan 5.5mm Valve Stem Seal - Set of 8
Regular price $10.99Regular price$12.74-$1.75 Sale price $10.99 -
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Vendor:SupertechSupertech Nissan 5.5mm Valve Stem Seal - Single
Regular price $1.99Regular price -
-$1.36
Vendor:SupertechSupertech Mitsubishi 6.6mm Intake Valve Stem Seal Viton (STD Size) - Set of 8
Regular price $6.99Regular price$8.35-$1.36 Sale price $6.99 -
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Vendor:SupertechSupertech Mitsubishi 6.6mm Viton Intake Valve Stem Seal - Single (STD Size - Drop Ship Only)
Regular price $0.99Regular price$1.06-$0.07 Sale price $0.99 -
-$2.02
Vendor:SupertechSupertech Mitsubishi 6.6mm Viton Exhaust Valve Stem Seal (STD Size) - Set of 8
Regular price $9.99Regular price$12.01-$2.02 Sale price $9.99 -
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Vendor:SupertechSupertech Mitsubishi 6.6mm Viton Exhaust Valve Stem Seal - Single (STD Size)
Regular price $1.99Regular price -
-$1.24
Vendor:SupertechSupertech Honda LS / Mitsubishi (Reduced Dia) 6.6mm Polyacrylic Intake Valve Stem Seal - Set of 8
Regular price $6.99Regular price$8.23-$1.24 Sale price $6.99 -
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Vendor:SupertechSupertech Honda LS / Mitsubishi (Reduced Dia) 6.6mm Polyacrylic Intake Valve Stem Seal
Regular price $0.99Regular price$1.06-$0.07 Sale price $0.99 -
-$2.02
Vendor:SupertechSupertech Honda LS / Mitsubishi (Reduced Dia) 6.6mm Viton Exhaust Valve Stem Seal - Set of 8
Regular price $9.99Regular price$12.01-$2.02 Sale price $9.99 -
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Vendor:SupertechSupertech Honda LS / Mitsubishi (Reduced Dia) 6.6mm Viton Exhaust Valve Stem Seal
Regular price $1.99Regular price$1.22Sale price $1.99 -
-$1.36
Vendor:SupertechSupertech Honda 5.5mm Polyacrylic Intake Valve Stem Seal - Set of 8
Regular price $6.99Regular price$8.35-$1.36 Sale price $6.99 -
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Vendor:SupertechSupertech Honda 5.5mm Polyacrylic Intake Valve Stem Seal - Single (Drop Ship Only)
Regular price $0.99Regular price$1.06-$0.07 Sale price $0.99 -
-$2.02
Vendor:SupertechSupertech Honda 5.5mm Viton Exhaust Valve Stem Seal - Set of 8
Regular price $9.99Regular price$12.01-$2.02 Sale price $9.99 -
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Vendor:SupertechSupertech Honda 5.5mm Viton Exhaust Valve Stem Seal - Single (Drop Ship Only)
Regular price $1.99Regular price -
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Vendor:SupertechSupertech GM LS 8mm Valve Stem Seal - Set of 16
Regular price $19.99Regular price$24.02-$4.03 Sale price $19.99 -
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Vendor:SupertechSupertech Toyota 2JZ 87mm 34mm CH 86mm Stroke -7.2cc Dish 9.5:1 CR Piston - Set of 6 (Excl Rings)
Regular price $1,106.99Regular price$1,383.02-$276.03 Sale price $1,106.99 -
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Vendor:SupertechSupertech Toyota 2JZ 86.5mm (+0.5) 86mm Stroke -7.2cc Dish 9.5:1 CR Piston - Set of 6 (Excl Rings)
Regular price $1,106.99Regular price$1,383.02-$276.03 Sale price $1,106.99 -
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Vendor:SupertechSupertech Toyota 2JZ 86mm 34mm CH 86mm Stroke -7.2cc Dish 9.5:1 CR Piston - Set of 6 (Excl Rings)
Regular price $1,106.99Regular price$1,383.02-$276.03 Sale price $1,106.99 -
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Vendor:SupertechSupertech Subaru H6 EZ30R 3.0L 89.50mm (+0.3) 30.30mm CH - 15cc Dish Piston - Set of 6 (Excl Rings)
Regular price $1,106.99Regular price$1,383.02-$276.03 Sale price $1,106.99 -
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Vendor:SupertechSupertech BMW S54B32 E46 87.5mm (+0.5) 32mm CH 12.5:1 CR Piston - Set of 6 (Excl Rings)
Regular price $1,137.99Regular price$1,421.10-$283.11 Sale price $1,137.99 -
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Vendor:SupertechSupertech BMW N55/S55 84mm 32.4mm CH 10.2:1 CR Piston - Set of 6 (Excl Rings)
Regular price $1,137.99Regular price$1,421.10-$283.11 Sale price $1,137.99 -
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Vendor:SupertechSupertech VW 1.8T 20V 83mm (+2) CH 32.7mm -4.5cc Dish 9.6:1 CR Piston - Set of 4 (Excl Rings)
Regular price $737.99Regular price$922.01-$184.02 Sale price $737.99 -
Sold outVendor:Supertech
Supertech VW 1.8T 20V 82.5mm (+1.5) 29.5mm CH -14.8cc Dish 9:1 CR Piston - Set of 4 (Excl Rings)
Regular price $737.99Regular price$922.01-$184.02 Sale price $737.99 -
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Vendor:SupertechSupertech VW 1.8T 20V 82mm (+1) CH 32.7mm -4cc Dish 9.3:1 CR Piston - Set of 4 (Excl Rings)
Regular price $737.99Regular price$922.01-$184.02 Sale price $737.99 -
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Vendor:SupertechSupertech VW 1.8T 20V 81mm 32.7mm CH -4cc Dish 9.3:1 CR Piston - Set of 4 (Excl Rings)
Regular price $737.99Regular price$922.01-$184.02 Sale price $737.99 -
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Vendor:SupertechSupertech VW 2.0L 16V 9A 83mm (+0.5) 29.9mm CH Flat Top Piston - Set of 4 (Excl Rings)
Regular price $658.99Regular price$823.26-$164.27 Sale price $658.99 -
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Vendor:SupertechSupertech Toyota FRS/Subaru BRZ 86mm 32.5mm CH -15.5cc Crown 9.5:1 CR Piston - Set of 4 (Excl Rings)
Regular price $913.99Regular price$1,141.82-$227.83 Sale price $913.99 -
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Vendor:SupertechSupertech Subaru WRX 2.0L (JDM Spec C) 93mm (+1) -4.5cc Dish 8.5:1 CR Piston - Set of 4 (Excl Rings)
Regular price $737.99Regular price$922.01-$184.02 Sale price $737.99 -
Sold outVendor:Supertech
Supertech Nissan CA18DET 84.5mm (+1.5) 30mm CH Flat Top 8.5:1 CR Piston - Set of 4 (Excl Rings)
Regular price $658.99Regular price$823.26-$164.27 Sale price $658.99 -
Sold outVendor:Supertech
Supertech Nissan CA18DET 84mm (+1) 30mm CH Flat Top 8.5:1 CR Piston - Set of 4 (Excl Rings)
Regular price $658.99Regular price$823.26-$164.27 Sale price $658.99 -
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Vendor:SupertechSupertech Nissan CA18DET 83.5mm (+0.5) 30mm CH Flat Top 8.5:1 CR Piston - Set of 4 (Excl Rings)
Regular price $658.99Regular price$823.26-$164.27 Sale price $658.99 -
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Vendor:SupertechSupertech Nissan KA24 90mm (+1) 1.339in CH -18.5cc Dish 9.5:1 CR Piston - Set of 4 (Excl Rings)
Regular price $1,199.99Regular price$1,498.73-$298.74 Sale price $1,199.99 -
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Vendor:SupertechSupertech Nissan KA24 90mm (+1) 1.339in CH -27cc Dish 8.6:1 CR Piston - Set of 4 (Excl Rings)
Regular price $658.99Regular price$823.26-$164.27 Sale price $658.99 -
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Vendor:SupertechSupertech BMW B48 2.0T 16V 82.5mm (+0.5) 33.2mm CH 11:1 CR Piston - Set of 4 (Excl Rings)
Regular price $737.99Regular price$922.01-$184.02 Sale price $737.99
