For M157 and M278 engines, the coolant lines can become brittle and fail over time. Replacing them during water pump service is a smart preventative measure to avoid future leaks or damage.
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Refresh your cooling system! Includes a new expansion tank, pressure cap, and 1-liter of blue coolant.
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Brand:
ES#:
5504936
Mfg#:
2045000949KT1
Ships in 2 Business Days
ON SALE!
$89.99
This product was last offered at the strikethrough price on 10-28-2026
Strengthen your M157 for high horsepower builds with PTG 2618 forged pistons and billet I-beam connecting rods, engineered to withstand extreme boost, cylinder pressures, and demanding performance applications.
Strengthen your high-boost M157 engine with 11mm ARP 625 Inconel head studs engineered to withstand extreme cylinder pressures and deliver superior clamping strength.
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
