do88 Silicone Coolant Hose Kit – BMW M3 (E90 / E92 / E93, S65)

OVERVIEW

The E9x M3 is now old enough that its rubber coolant hoses are hardening and cracking, and a failed hose on an S65 is an expensive way to find out. The do88 kit replaces the factory radiator, expansion tank, heater, auxiliary water pump and DCT cooler hoses with reinforced silicone.

Each hose has three to five layers of reinforcement depending on diameter, so it holds pressure and temperature for the long term. The factory quick-connect fittings are reused: cut off the old crimp clamps and fit them to the new hoses with regular hose clamps.

SPECS

• Silicone construction with 3 to 5 reinforcement layers depending on diameter
• Black finish
• Reuses the OE quick-connect fittings
• Replaces OE upper and lower radiator hoses (11537838214, 11537840661), expansion tank hose (11537838215), heater hoses (64219119155, 11537838775), DCT cooler hoses (17122283593, 17222283594), bleed hose (17122283591) and auxiliary water pump hoses (64219119156, 64219119154)

PARTS INCLUDED

• do88 silicone coolant hose kit (black)

TECH RESOURCES

• Required extras: the matching do88 hose clamp kit for kit 94 (sold separately) and BMW-approved coolant to refill and bleed.
• Installation notes: drain the coolant, remove each OE hose, cut the original crimp clamps with a hacksaw to free the OE quick-connect fittings, and mount them in the silicone hoses with regular hose clamps. Refill and bleed per BMW procedure.
• Price is for the item only; labor is not included.

PART NUMBER

• do88-kit94B — do88 Coolant Hoses, BMW M3 E90 / E92 (black)

VEHICLE APPLICATIONS