My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-7728 Marine Carburetor Rebuild Kit for Holley R-6647A 4-Barrel

Manufacturer

Picture for manufacturer Sierra

Part Number

18-7728
14 reviews
Sale Price

$131.57

3 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-7728 is a marine carburetor rebuild kit designed for use with Holley 4-barrel carburetors, specifically the R-6647A and R-6647AAA models found on MerCruiser 7.4L 454 cubic inch inboard engines. This kit provides all the essential components needed to restore proper carburetor function and fuel delivery on your marine engine.

Key Features:

  • Designed for Holley 4-barrel marine carburetors
  • Compatible with Holley carburetor models R-6647A and R-6647AAA
  • Engineered to meet or exceed OEM standards for marine applications
  • Built to withstand the demanding conditions of a marine environment
  • Restores carburetor performance and fuel efficiency

Carburetor Cross-Reference:

  • Holley R-6647A
  • Holley R-6647AAA

Sierra is a trusted name in marine aftermarket parts, offering premium-quality replacements for thousands of marine components. The 18-7728 carburetor kit is a cost-effective solution for rebuilding your Holley marine carburetor and returning your inboard engine to peak performance.

I saved so much by using Autoplicity! The shipping was fast and the website easy to navigate. I will use Autoplicity for all my future needs.

Your Web site is very user friendly

Very easy to look for parts.

Easy to order.

Don't know if it accepted the coupon code but shopping was easy.

It was easy to order the item I needed.

Quick and easy

Great Prices

Great Prices! Have Not Received My Order Yet,But I'm Sure its On its Way!

Easy ordering and good prices

Had the absolute best price for a bike carrier. Quick shipping, lots of email feedback so you know what's happening to your order. Highly recommended! AAAAA++++++++++++

easy shopping.

I was told it would ship within 48 hours, when I called they told it was 24 business hours.. I think that they think we are morons... Price of items and chipping was really good.. Hope I get my stuff quickly..

Unbelievable price!Fast shipping and a great product.Thank You.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy