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#42737485
Holley 37-485 4150 4 Barrel Carburetor Rebuild Renew Kit
- Kit provides you with the parts required to bring your Holley four barrel carb back to original specifications and "like new" condition
- It includes new gaskets, O-rings, pump diaphragms, needle and seats, power valves, and a detailed instruction sheet
- Specifically designed for carbs that use gasoline
$59.84
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$66.49
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Product Summary
Universal Fit, Gasoline Fuel Type
- Kit provides you with the parts required to bring your Holley four barrel carb back to original specifications and "like new" condition
- It includes new gaskets, O-rings, pump diaphragms, needle and seats, power valves, and a detailed instruction sheet
- Specifically designed for carbs that use gasoline
- It can be used for gas application as long as different accelerator pumps are used
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Return PolicyHolley 37-485 Details
Holley 37-485 Details
These kits give you the parts required to bring your Holley four barrel carb back to original specifications and "like new" condition. The Renew Kit package includes new gaskets, O-rings, pump diaphragms, needle and seats, power valves, and a detailed instruction sheet to take you step-by-step through the rebuilding process.
Charts
427-37485 Instructions (PDF)
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Holley IRS Sale 2026
Save 10% instantly on select products across the Holley family of performance brands during the annual Holley I.R.S.Tax Sale. Instant rebate period has been extended and now runs from February 17, 2026 through April 19, 2026.
Guides & Documents
Holley 37-485 Specifications
Holley 37-485 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 37-485 |
| Brand | Holley |
| Fuel Type | Gasoline |
| GENERAL | |
| Sold in Quantity | Kit |
| GTIN Code | 090127059524 |
Ratings & Reviews
4.9
9 Reviews
Customers regard the kit as high-quality and easy-to-use, especially appreciating the comprehensive selection of parts for successful rebuilds. Users are loyal to the Holley brand for its dependable performance. The included gaskets are also mentioned for their durability and ease in subsequent disassembly. The instructions, while clear for some, are noted to be a potential area of improvement for more specific carburetor models. Despite some minor concerns, this kit is a preferred choice for users seeking efficient renewal of their older Holley carburetors.
Ratings & Reviews
4.9
9 Reviews
Customers regard the kit as high-quality and easy-to-use, especially appreciating the comprehensive selection of parts for successful rebuilds. Users are loyal to the Holley brand for its dependable performance. The included gaskets are also mentioned for their durability and ease in subsequent disassembly. The instructions, while clear for some, are noted to be a potential area of improvement for more specific carburetor models. Despite some minor concerns, this kit is a preferred choice for users seeking efficient renewal of their older Holley carburetors.
4.9
9 reviews
5
8
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Filter by Ratings
Great holly product
5.0
7 months ago
Holy Smoke
Fox AR
Verified
This product worked excellent in my first series 600 double pumper. Nothing like original Holly quality Components.
Would Recommend
I would buy this kit again!
5.0
2 years ago
Justin
Columbus NE
Verified
Everything worked great!
Would Recommend
Product was great
5.0
3 years ago
Doctor Carburetor
Lincoln NE
Verified
I only use Holley brand kits and you had it in stock
Would Recommend
It worked well but hard to judge as I still have problems!
5.0
3 years ago
Jim
Wichita, KS
Verified
The rebuild kit is easy to use but you still need to go slow so as to get the correct gaskets.
Would Recommend
Excellent product
5.0
4 years ago
Chris
St Joe mo
Verified
Holley quality as always!
Would Recommend
Ordered Friday got um Monday!
5.0
8 years ago
Mr Hong
HI
Verified
I will be ordering more in the future
Would Recommend
Super kit
5.0
9 years ago
Tommytmopar
Hartselle AL
Verified
I was able to completely renew the carb and yet could easily reopen with the good gaskets.
Would Recommend
Good product for many holley carbs
4.0
9 years ago
The Bull Dozier
Paris AR
Verified
This product was great for the refresh on my older holley 850 DP. With all the parts I needed for a basic rebuild and the quality I expected from Joey parts. The only drawbacks are the instructions didn't refer to my carburetor and one of the diagrams was illegible. Updating instructions would be a plus.
Would Recommend
Everything necessary is included
5.0
11 years ago
Fixer123
Upstate New York
Verified
This Holley rebuild kit is quite complete and contains all the parts necessary to do a good rebuild of the specified carburetor. The instructions are fairly clear and the diagrams are good. I have used these kits before and always have good results.
Would Recommend
Showing 9 of 9 reviews