Heating and Cooling› Thermostats, Housings and Fillers

MARCH PERFORMANCE

Thermostat Housing SBC 45 Degree Black

$147.95

SKU: M05O BTH-203-08

In Stock
In Stock
Ships by Jun 15
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The March Performance BTH-203-08 is a water neck thermostat housing designed for Small and Big Block Chevy V8 engines. It features a 45-degree angle and a 1-1/2 inch ID hose barb. This two-piece housing is CNC machined in the USA from 6061-T6 aluminum and is available in a black anodized finish.

The housing includes mounting hardware and an O-ring for a secure seal. It does not include a thermostat and has no provision for a heater bypass. The water neck is sold individually.

Fitment

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Specifications

BrandMARCH PERFORMANCE
Part NumberM05O BTH-203-08

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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