Air and Fuel Carburetors and Components

HYGRADE TUNEUP

CARB KIT

$57.67

SKU: H02M 381B

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Hygrade 381B is a carburetor repair kit designed for Rochester 4-barrel carburetors, specifically 4MC and 4MV types. It includes essential components to restore proper fuel delivery and function.

This kit features an accelerator pump for improved throttle response, a flange base gasket and fuel inlet gasket for proper sealing, and a needle and seat to regulate fuel flow. It also comes with detailed instructions for installation. While the float and throttle linkage clip are not included, the kit focuses on critical seals and the accelerator pump to ensure consistent fuel metering.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHYGRADE TUNEUP
Part NumberH02M 381B

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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