Empower Your JDM Engine With GSC Power Division Components
Discover the GSC Power Division collection at HD Werks, offering genuine, high-performance components engineered for superior engine and powertrain upgrades. These original parts, designed for racing and aftermarket tuning, deliver custom solutions that optimize power output and dynamic control. Crafted with Japanese innovation, GSC products provide authentic quality and robust performance for both track and street use. Experience the perfect blend of original design and aggressive performance. Shop our GSC Power Division range for original components that transform your vehicleís dynamics.
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-$28.91
Vendor:GSC Power DivisionGSC P-D Subaru EJ Series EJ205/EJ207/EJ257 33mm Head (+1mm) Chrome Polished Exhaust Valve - Set of 8
Regular price $167.99Regular price$196.90-$28.91 Sale price $167.99 -
-$29.14
Vendor:GSC Power DivisionGSC P-D Subaru EJ205/EJ207/EJ257 36mm Head (STD) Chrome Polished Intake Valve - Set of 8
Regular price $165.99Regular price$195.13-$29.14 Sale price $165.99 -
-$28.58
Vendor:GSC Power DivisionGSC P-D Subaru EJ205/EJ207/EJ257 32mm Head (STD) Chrome Polished Exhaust Valve - Set of 8
Regular price $166.99Regular price$195.57-$28.58 Sale price $166.99 -
-$6.16
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Evo 1-9 Polished Super Alloy Exhaust Valve - 31.5mm Head (+1mm) - Single
Regular price $34.99Regular price$41.15-$6.16 Sale price $34.99 -
-$6.16
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Evo 1-9 Polished Super Alloy Exhaust Valve - 30.5mm Head (STD) - Single
Regular price $34.99Regular price$41.15-$6.16 Sale price $34.99 -
-$2.97
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Evo 1-9 Chrome Polished Intake Valve - 35mm Head (+1mm) - Single
Regular price $22.99Regular price$25.96-$2.97 Sale price $22.99 -
-$3.51
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Evo 1-9 Chrome Polished Exhaust Valve - 31.5mm Head (+1mm) - Single
Regular price $21.99Regular price$25.50-$3.51 Sale price $21.99 -
-$3.85
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Evo 1-9 Chrome Polished Intake Valve - 34mm Head (STD) - Single
Regular price $21.99Regular price$25.84-$3.85 Sale price $21.99 -
-$3.56
Vendor:GSC Power DivisionGSC P-D Mitsubishi 4G63T Evo 1-9 Chrome Polished Exhaust Valve - 30.5mm Head (STD) - Single
Regular price $21.99Regular price$25.55-$3.56 Sale price $21.99 -
-$11.07
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 $66.99Regular price$78.06-$11.07 Sale price $66.99 -
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Vendor:GSC Power DivisionGSC P-D Ford Mustang 5.0L Coyote Valve Stem Seal w/Integrated Spring Seat - Set of 32
Regular price $61.99Regular price$72.31-$10.32 Sale price $61.99 -
-$4.26
Vendor:GSC Power DivisionGSC P-D Toyota Supra/BMW B58/N54/S55/S58 Viton Intake Valve Stem Seals - Set of 12
Regular price $28.99Regular price$33.25-$4.26 Sale price $28.99 -
-$4.26
Vendor:GSC Power DivisionGSC P-D Toyota Supra/BMW B58/N54/S55/S58 Viton Exhaust Valve Stem Seals - Set of 12
Regular price $28.99Regular price$33.25-$4.26 Sale price $28.99 -
-$5.61
Vendor:GSC Power DivisionGSC P-D Toyota 2JZ / Nissan VR38DETT 0.060in Thick 1.085in OD 0.725in ID Spring Seat Kit (Set of 24)
Regular price $33.99Regular price$39.60-$5.61 Sale price $33.99 -
-$3.01
Vendor:GSC Power DivisionGSC P-D Toyota 2JZ-GTE / Nissan VR38DETT 1mm Thick 27.56mm OD 18.4mm ID Spring Seat Kit (Set of 24)
Regular price $20.99Regular price$24.00-$3.01 Sale price $20.99 -
-$3.01
Vendor:GSC Power DivisionGSC P-D Toyota 2JZ-GTE / Nissan VR38DETT .5mm Thick 27.56mm OD 18.4mm ID Spring Seat Kit (Set of 24)
Regular price $20.99Regular price$24.00-$3.01 Sale price $20.99 -
-$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 -
-$4.80
Vendor:GSC Power DivisionGSC P-D 2023+ Nissan 400Z VR30DDTT Valve Stem Seal - Set of 24
Regular price $28.99Regular price$33.79-$4.80 Sale price $28.99 -
-$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 -
-$5.08
Vendor:GSC Power DivisionGSC P-D Nissan TB48DE Valve Stem Viton 7mm Seal - SET OF 24
Regular price $31.99Regular price$37.07-$5.08 Sale price $31.99 -
-$4.50
Vendor:GSC Power DivisionGSC P-D Nissan RB26DETT Valve Stem Seal - Set of 24
Regular price $31.99Regular price$36.49-$4.50 Sale price $31.99 -
-$1.50
Vendor:GSC Power DivisionGSC P-D Honda B/K/H Viton 6mm Exhaust Valve Stem Seal Set
Regular price $10.99Regular price$12.49-$1.50 Sale price $10.99 -
-$1.60
Vendor:GSC Power DivisionGSC P-D Honda B/K/H Series Viton 5.5mm Valve Stem Seal - Set of 8
Regular price $10.99Regular price$12.59-$1.60 Sale price $10.99 -
-$2.62
Vendor:GSC Power DivisionGSC P-D Toyota MR-2 3SGTE Viton 6mm Valve Stem Seal Set
Regular price $17.99Regular price$20.61-$2.62 Sale price $17.99 -
-$3.78
Vendor:GSC Power DivisionGSC P-D Toyota 2JZ Viton 6mm Valve Stem Seal Set
Regular price $24.99Regular price$28.77-$3.78 Sale price $24.99 -
-$1.78
Vendor:GSC Power DivisionGSC P-D Toyota 2JZ Viton 6.6mm Exhaust Valve Guide Seal Kit Set of 12
Regular price $15.99Regular price$17.77-$1.78 Sale price $15.99 -
-$1.54
Vendor:GSC Power DivisionGSC P-D Toyota 2JZ Viton 6mm Valve Seal Kit Set of 12
Regular price $14.99Regular price$16.53-$1.54 Sale price $14.99 -
-$7.01Vendor:GSC Power Division
GSC P-D Audi R8 V10 / Lamborghini Gallardo/Huracan V10 Viton 6mm Valve Stem Seals - Set of 40
Regular price $41.99Regular price$49.00-$7.01 Sale price $41.99 -
-$3.10
Vendor:GSC Power DivisionGSC P-D Subaru FA20 Viton 6mm Valve Stem Seal Set
Regular price $20.99Regular price$24.09-$3.10 Sale price $20.99 -
-$5.51
Vendor:GSC Power DivisionGSC P-D Subaru EJ205/EJ207/EJ257/EJ257B/SOHC EJ Valve Keeper Set (Set of 32)
Regular price $32.99Regular price$38.50-$5.51 Sale price $32.99 -
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Vendor:GSC Power DivisionGSC P-D Mitsubishi Evo 4-9 4G63 Race Balance Shaft
Regular price $210.99Regular price$247.50-$36.51 Sale price $210.99 -
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Vendor:GSC Power DivisionGSC P-D Nissan VR38DETT S2 Cams 274/274 Billet
Regular price $1,338.99Regular price$1,575.00-$236.01 Sale price $1,338.99 -
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Vendor:GSC Power DivisionGSC P-D 08-16 Mitsubishi Evo X 4B11T S2 Cams 274/274 Billet
Regular price $698.99Regular price$821.50-$122.51 Sale price $698.99 -
-$122.51
Vendor:GSC Power DivisionGSC P-D 08-16 Mitsubishi Evo X 4B11T S1 Cams 264/264 Billet
Regular price $698.99Regular price$821.50-$122.51 Sale price $698.99 -
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Vendor:GSC Power DivisionGSC P-D 4G63T Evo 9 Mivec S3 Cams 280/280 Billet
Regular price $653.99Regular price$768.50-$114.51 Sale price $653.99
