Larger diameter pulley increases the speed at which the supercharger spins, increasing the boost pressure output
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms *NOTE: This kit must be used with appropriate "Stage 2" performance software.
Brand:
ES#:
3438174
Mfg#:
CTS-HW-266-180
Special Order: No Guaranteed ETA
ON SALE!
SAVE 20%
$379.99
This product was last offered at the strikethrough price on 07-09-2026
Common source of undiscoverable coolant leaks
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4818457
Mfg#:
06E117021L
In Stock
ON SALE!
SAVE 20%
$93.99
This product was last offered at the strikethrough price on 05-02-2026
Internal spring for the supercharger drive unit - Located inside of the drive unit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
1894629
Mfg#:
06E145635A
Ships in 5 Business Days
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$395.99
This product was last offered at the strikethrough price on 02-26-2026
Also referred to as the 'relay roller'
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
Sealing ring between fuel tank and flange - Two required
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat!
Install new hardware with your new parts. 5x20
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Used to secure the coolant expansion tank
Brand:
ES#:
471868
Mfg#:
N91090701
In Stock
25% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$3.99
This product was last offered at the strikethrough price on 07-09-2026
Ensure that your engine is getting clean air with a new filter. Features a foam layer for dusty regions.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
414335
Mfg#:
7L0129620A
Ships in 3 Business Days
6% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$46.99
This product was last offered at the strikethrough price on 07-09-2026
Install kit used for APR MS100035
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes! To be used for APR Supercharger Drive Pulley Upgrade MS100135
Brand:
ES#:
2209707
Mfg#:
MS100025
Ships in 6 Business Days
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$393.99
This product was last offered at the strikethrough price on 07-09-2026
Increases diameter of factory pulley from ~162mm to ~187mm, which in turn spins the supercharger ~15.4% faster!
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes! APR Stage II software is required to run any upgraded Pulley configuration and is sold separately - Pleas
Brand:
ES#:
3219162
Mfg#:
MS100133
Ships in 6 Business Days
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$393.99
This product was last offered at the strikethrough price on 07-09-2026
Includes OE oil filter, drain plug/washer, and 7 liters of Pentosin 5w-40
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.
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