Replacement thermostat With Housing for B46 and B48
For vehicles with the earlier Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Brand:
ES#:
4686052
Mfg#:
11537644811
In Stock
ON SALE!
SAVE 15%
$223.99
This product was last offered at the strikethrough price on 05-02-2026
Located on the side of the engine block, includes gasket
We Price Match - Give Us A Call or Chat! For vehicles with the earlier Gen1 B46/B48 engine - Not compatible with the later TU engines
OEM replacement thermostat with housing and gasket for B46 and B48.
For vehicles with the earlier Gen1 B48/B46 only - not compatible with the later Gen2 B48 (TU) engines
Brand:
ES#:
3198177
Mfg#:
11537644811
Ships in 1-2 days
8% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$602.99
This product was last offered at the strikethrough price on 08-22-2026
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!
For vehicles without Energy Recovery System (S1CEA) For later models with the B48 Gen2 (B48D) engine only - Not compatible with earlier Gen1 engines
Brand:
ES#:
5425175
Mfg#:
G2XB48DOFHL2KT
Ships in 2 Business Days
ON SALE!
$1733.99
This product was last offered at the strikethrough price on 06-15-2026
Your engine relies on a steady temperature to stay healthy and efficient. With the Rein CTA0079, you’re getting OE-level quality and a frustration-free install that gets your car back to peak performance.
Brand:
ES#:
5470515
Mfg#:
11537644811
Ships in 3 Business Days
$322.99
This product was last offered at the strikethrough price on 06-11-2026
Replacement thermostat With Housing for B46 and B48
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
Lifetime Replacement
