Skip to product grid
-
Save $71.46 USD
Koyo 08-13 BMW M3 E90/E92/E93 4.0L (MT/DCT) Radiator
Regular price $821.74 USDRegular price$893.20 USD-$71.46 USD Sale price $821.74 USD -
Save $39.74 USD
Koyo 99-05 BMW E46 (Non M3) M/T ONLY Radiator
Regular price $457.06 USDRegular price$496.80 USD-$39.74 USD Sale price $457.06 USD -
Save $76.61 USD
Koyo 15-20 BMW M3/M4 (F80/82/83) / 19-20 M2 Comp. (F87) Alum. High-Perf. Front Mount Heat Exchanger
Regular price $880.99 USDRegular price$957.60 USD-$76.61 USD Sale price $880.99 USD -
Save $44.42 USD
Koyo 2002 Subaru Impreza WRX 2.0L Turbo Radiator
Regular price $510.78 USDRegular price$555.20 USD-$44.42 USD Sale price $510.78 USD -
Save $58.72 USD
Koyo 13-17 Ford Focus ST 2.0L I4 Turbo Racing Radiator
Regular price $675.28 USDRegular price$734.00 USD-$58.72 USD Sale price $675.28 USD -
Save $45.25 USD
Koyo 08-15 Subaru WRX / STI 05-09 Subaru Legacy GT 2.5L (MT / w/ Filler Neck) Radiator
Regular price $520.35 USDRegular price$565.60 USD-$45.25 USD Sale price $520.35 USD -
Save $43.54 USD
Koyo 00-09 Honda S2000 2.0/2.2L (MT) Radiator
Regular price $500.66 USDRegular price$544.20 USD-$43.54 USD Sale price $500.66 USD -
Save $43.06 USD
Koyo 03-07 Subaru Impreza WRX/STI (MT / w/ Filler Neck) Radiator
Regular price $495.14 USDRegular price$538.20 USD-$43.06 USD Sale price $495.14 USD -
Save $42.29 USD
Koyo 93-98 Subaru Impreza 1.8/2.2L (MT) Radiator
Regular price $486.31 USDRegular price$528.60 USD-$42.29 USD Sale price $486.31 USD -
Save $47.60 USD
Koyo 04-08 Subaru Forester XT 2.5L Turbo (MT) Radiator
Regular price $547.40 USDRegular price$595.00 USD-$47.60 USD Sale price $547.40 USD -
Save $49.50 USD
Koyo 95-04 Toyota Tacoma V6 4x4 Manual Radiator
Regular price $569.30 USDRegular price$618.80 USD-$49.50 USD Sale price $569.30 USD -
Save $43.95 USD
Koyo 06-08 Mazdaspeed 6 2.3L Turbo Radiator
Regular price $505.45 USDRegular price$549.40 USD-$43.95 USD Sale price $505.45 USD -
Save $39.74 USD
Koyo 71-74 Toyota Corolla 1.6L TE27/TE28/TS21 Manual Radiator
Regular price $457.06 USDRegular price$496.80 USD-$39.74 USD Sale price $457.06 USD -
Save $44.77 USD
Koyo 89-92 Toyota Cressida 3.0L I6 Manual Only
Regular price $514.83 USDRegular price$559.60 USD-$44.77 USD Sale price $514.83 USD -
Save $45.31 USD
Koyo 99-01 Subaru Impreza RS / Outback 99-02 Subaru Forester 2.5L Performance Radiator
Regular price $521.09 USDRegular price$566.40 USD-$45.31 USD Sale price $521.09 USD -
Save $44.02 USD
Koyo 2016-2018 Honda Civic 1.5L Radiator (Excl. Type R)
Regular price $506.18 USDRegular price$550.20 USD-$44.02 USD Sale price $506.18 USD -
Save $38.56 USD
Koyo 91-94 Subaru Legacy 2.2L Turbo (MT) Radiator
Regular price $443.44 USDRegular price$482.00 USD-$38.56 USD Sale price $443.44 USD -
Save $39.60 USD
Koyo 04-08 Mazda RX-8 1.3L (MT) Radiator
Regular price $455.40 USDRegular price$495.00 USD-$39.60 USD Sale price $455.40 USD -
Save $37.62 USD
Koyo 89-97 Mazda MX-5 Miata 1.6/1.8L (MT) Radiator
Regular price $432.58 USDRegular price$470.20 USD-$37.62 USD Sale price $432.58 USD -
Save $39.23 USD
Koyo 02-05 Honda Civic Si 2.0L EP3 (MT) Radiator
Regular price $451.17 USDRegular price$490.40 USD-$39.23 USD Sale price $451.17 USD -
Save $38.75 USD
Koyo 92-00 Honda Civic 1.6 DOHC (Will Not Fit Vehicles w/AC) Manual Transmission Radiator
Regular price $445.65 USDRegular price$484.40 USD-$38.75 USD Sale price $445.65 USD -
Save $46.80 USD
Koyo 06-13 Mazda MX-5 Miata (MT) Radiator
Regular price $538.20 USDRegular price$585.00 USD-$46.80 USD Sale price $538.20 USD -
Save $39.31 USD
Koyo 90-96 Nissan 300ZX 3.0L Non Turbo MT Radiator
Regular price $452.09 USDRegular price$491.40 USD-$39.31 USD Sale price $452.09 USD -
Save $51.09 USD
Koyo 96-02 Toyota 4Runner 2.7L / 3.4L w/ 5MT Radiator (Requires Cap PN SK-C13)
Regular price $587.51 USDRegular price$638.60 USD-$51.09 USD Sale price $587.51 USD -
Save $37.62 USD
Koyo 99-05 Mazda MX-5 Miata 1.8L (MT) Radiator
Regular price $432.58 USDRegular price$470.20 USD-$37.62 USD Sale price $432.58 USD -
Save $44.30 USD
Koyo 03-07 Infiniti G35 Coupe / 03-06 G35 Sedan VQ35DE (MT) Radiator
Regular price $509.50 USDRegular price$553.80 USD-$44.30 USD Sale price $509.50 USD -
Save $44.38 USD
Koyo 84-87 Toyota Corolla RWD w/ 3SGE BEAMS 2.0L Engine Swap Manual Radiator
Regular price $510.42 USDRegular price$554.80 USD-$44.38 USD Sale price $510.42 USD -
Save $46.67 USD
Koyo Nissan 240SX V8 Swap/KA24 Turbo Radiator
Regular price $536.73 USDRegular price$583.40 USD-$46.67 USD Sale price $536.73 USD -
Save $53.52 USD
Koyo 91-05 Acura NSX 3.0/3.2L (MT) Radiator
Regular price $615.48 USDRegular price$669.00 USD-$53.52 USD Sale price $615.48 USD -
Save $42.50 USD
Koyo 11-16 Honda CR-Z 1.5L Hybrid (MT) / 09-14 Honda Fit (MT) Radiator
Regular price $488.70 USDRegular price$531.20 USD-$42.50 USD Sale price $488.70 USD -
Save $41.63 USD
Koyo 01-05 Lexus IS300 (MT) Radiator
Regular price $478.77 USDRegular price$520.40 USD-$41.63 USD Sale price $478.77 USD -
Save $3.94 USD
Koyo Hyper Radiator Cap - Shallow Plunger Style - Blue Label
Regular price $45.26 USDRegular price$49.20 USD-$3.94 USD Sale price $45.26 USD -
Save $36.94 USD
Koyo 06-11 Honda Civic Si 2.0L Coupe/Sedan (MT) Radiator
Regular price $424.86 USDRegular price$461.80 USD-$36.94 USD Sale price $424.86 USD -
Save $37.15 USD
Koyo 94-01 Acura Integra (MT w/ Showa/Denso OEM) Radiator
Regular price $427.25 USDRegular price$464.40 USD-$37.15 USD Sale price $427.25 USD -
Save $47.33 USD
Koyo 2016 Mazda MX-5 Miata 2.0L I4 (MT) Aluminum Radiator
Regular price $544.27 USDRegular price$591.60 USD-$47.33 USD Sale price $544.27 USD
Enhance Your JDM Drivetrain Efficiency With Koyo Performance Parts
Optimize your drivetrain with the Koyo collection at HD Werks, featuring genuine, high-performance components engineered for racing and aftermarket tuning. These original parts deliver custom upgrades that enhance engine reliability and transmission efficiency. Designed with Japanese precision, Koyo products offer authentic quality and robust performance for aggressive driving. Experience improved power transfer and dynamic control with parts built for superior performance enhancements. Shop our Koyo range for original components that transform your drivetrain into a powerhouse of reliability and efficiency.