Connects the cylinder head to the water pump
For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later models that feature the B48N/B48P engine
Brand:
ES#:
4179820
Mfg#:
11538650984
Ships in 1-2 days
5% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$138.99
This product was last offered at the strikethrough price on 03-04-2026
Also called a Heat Management Module, this electronic thermostat controls coolant flow based on engine temperatures
10X Entries For Our 25th Anniversary Sweepstakes! For models with the earlier B48D, B46D, or B46X engines - Not compatible with the later models that feature the B48N/B48P engine
Brand:
ES#:
5433734
Mfg#:
11538642560
In Stock
ON SALE!
$356.99
This product was last offered at the strikethrough price on 05-02-2026
Main pump with metal bracket
For models with the earlier B48D, B46D, or B46X engines and without the Energy Recovery System - Not compatible with the later models that feature the B48N/B48P engine
Brand:
ES#:
4179759
Mfg#:
11518650988
In Stock
9% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$300.99
This product was last offered at the strikethrough price on 08-21-2026
Remove and install PTFE sealing rings on the injector
For Gen2 / TU engines only (B46D, B48D, B48X, B58D) - Not for early Gen1 or later Gen3 TU2 engines
Includes the components needed to replace the two biggest B48 cooling issues, plus most of the "while you are in there" parts we highly recommend replacing - featuring an Aluminum Oil Filter Housing, Coolant Thermostat Module, and coolant pump assembly!
10X Entries For Our 25th Anniversary Sweepstakes! For vehicles without Energy Recovery System (S1CEA)
Brand:
ES#:
5425175
Mfg#:
G2XB48DOFHL2KT
Ships in 3 Business Days
ON SALE!
$1733.99
This product was last offered at the strikethrough price on 06-15-2026
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.
Lifetime Replacement
