Base Insulator

Part # 108-37 Be the first to write a review

For Model 4165™ and Model 4175™ and Quadra-Jet Phenolic

Estimated Ship Date: 06/15/2026

Find Similar In-Stock Items

Free Shipping on orders over $149*

Advertised Price $79.95

$71.96

Save $7.99

Add to Wishlist

Notify Me When Available

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details

Base Gasket

Features:

2 3/8" Secondary
1 3/8" Primary
Includes Carb Studs
Phenolic
Fits Holley Model 4165™, Model 4175™ and Quadra-Jet
11/16" Thick

About Holley

Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.

Brand	Holley
Carburetor Type	Performance
Category	Air and Fuel Delivery
Emission Code	5
Grade Type	Performance
Material	Fiber
Model	4165/4175
Mounting Hole Quantity	4
Part Type	Carburetor Spacer
Product Type	Base Gasket
Spacer Finish	Black Phenolic
Sub Category	Hardware, Fasteners and Fittings
Thickness	11/16 IN
Warranty	Manufacturer's Limited 90 Day Warranty
UPC	090127015933
Part Number	108-37

Manufacturer's Limited 90 Day Warranty: See Details

Reviews

Your Review

Title

Review

Photos

*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.