Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Moderate — 2–4 hours
Overview
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Part #: 37-1549
Holley Fast Kits include only genuine Holley parts which are competitively priced. When your Holley is rebuilt using a genuine Holley Fast Kit, you're assured that original Holley quality is maintained.
Features:
- Fits Holley 4150 Ultra XP E85 carburetors
- Genuine Holley quality parts
- Step by step instructions included
- Includes (1) 5.5 power valve, (2) accelerator pump diaphragms, (2) needle and seats, and all necessary gaskets
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
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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
| Brand | Holley |
| Part Number | H00E 37-1549 |
| Weight | 0.41 lb |
Videos
E85 Conversion for Holley 4150 / 4160 carburetors using a kit
Cheapest E85 Carb Conversion Holley Carburetor | Holley Carb Secrets | Proform Race Series
Holley 4160 4 Barrel Carburetor Rebuild Kit K6143
How To Identify Your Holley & Demon Carburetor
ALCOHOL E85 CARBURETORS EXPLAINED | Holley Carb Secrets | Alcohol Carbs
Holley Four-Barrel 4150 and 4160 Carburetors Explained
Holley Carb Tuning Tips! | Engine Masters | MotorTrend
Holley Ultra Dominator Carburetors
Is it worth it? Replacing your carburetor with a Holley Sniper EFI | Hagerty DIY
What’s the Difference Between Holley Sniper 1 & Sniper 2 EFI Systems? | Summit Racing
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Returns & Fitment
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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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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