The ULTIMATE N55 ignition system upgrade! This plug-and-play conversion kit offers a 2.3x increase in spark energy and supports over 1000 HP.
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The 5150 AutoSport Pro-Series Turbo Build Kit is made for high horsepower and turbocharged performace.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles With Motiv ReFlex Unit Currently Installed
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For Vehicles With Motiv ReFlex Unit Currently Installed Only
This is the main belt tensioner for A/C, power steering and alternator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4830507
Mfg#:
11288604266
In Stock
ON SALE!
$51.99
This product was last offered at the strikethrough price on 05-02-2026
Increase drivetrain rigidity and put that power to the ground! This industry-leading encapsulated design reduces NVH and prevents heat transfer.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4758143
Mfg#:
043588LA04
In Stock
ON SALE!
SAVE 15%
$452.99
This product was last offered at the strikethrough price on 06-13-2026
Easy to install, easy to use boost controller - up to 30HP, 40lb/ft gain!
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!
Brand:
ES#:
3149056
Mfg#:
D440-0010
In Stock
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$321.99
This product was last offered at the strikethrough price on 06-28-2026
Replace your faulty sensor to restore engine performance and fuel economy
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4766522
Mfg#:
13627599042
In Stock
ON SALE!
SAVE 18%
$56.99
This product was last offered at the strikethrough price on 05-02-2026
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.
