Dress up your engine bay with new coolant expansion tank caps
Must Swap Pressure Relief Valve From PN #17117639021 to New Unit. Other Pressure Relief Valves Will Not Apply
Replacement thermostat With Housing for B46 and B48
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For vehicles with the earlier Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Featuring Leichtlauf High-Tech engine oil, Hengst filter, and a new drain plug.
10X Entries Into Our F80 M3 Sweepstakes Recommended for warmer (tropical) climates or track/racing applications only
Brand:
ES#:
4013669
Mfg#:
11428575211-1KT
In Stock
ON SALE!
SAVE 10%
$109.99
This product was last offered at the strikethrough price on 08-31-2026
Allows oil to drain from the turbo and return back to the engine
2X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For models with the Gen1 B46/B48 engine only - Not for the Gen2 TU engines
Provides oil to your engine to keep components well lubricated
For models with the early B46A or B48A engine only - Not compatible with the later B46D/B48D (TU) engine
Brand:
ES#:
2848334
Mfg#:
11417624135
Ships in 1 day
6% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$538.99
This product was last offered at the strikethrough price on 11-05-2026
Connects the expansion tank to the radiator
2X Entries Into Our F80 M3 Sweepstakes For early models with the Gen1 B46/B48 engine - Not for vehicles with the later TU engines
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
