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Ships within 48 hours · Estimated delivery Jul 29 - Aug 3
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Description
Merchant Automotive Fuel Filter Head Rebuild Kit 11-16 GM 6.6L Duramax LMLRestore, upgrade, or completely overhaul your fuel filter head with the Merchant Automotive Fuel Filter Head Rebuild Kit for 20112016 GM 6. 6L Duramax LML trucks. Choose from three kit options: Seal Kit, Deluxe Kit, or Master Kit, to match your needs, when you're doing routine maintenance or a full refresh. The Seal Kit includes everything needed to stop pesky fuel leaks and keep your filter head functioning like new, featuring all the essential seals
Restore, upgrade, or completely overhaul your fuel filter head with the Merchant Automotive Fuel Filter Head Rebuild Kit for 2011–2016 GM 6.6L Duramax LML trucks.
Choose from three kit options: Seal Kit, Deluxe Kit, or Master Kit, to match your needs, when you're doing routine maintenance or a full refresh.
- The Seal Kit includes everything needed to stop pesky fuel leaks and keep your filter head functioning like new, featuring all the essential seals and O-rings.
- Step up to the Deluxe Kit and you'll get the full seal set plus the Merchant Automotive aluminum bleeder screw and Water-In-Fuel (WIF) sensor delete plug, replacing the problematic factory plastic components with durable, precision-machined aluminum for long-term reliability.
- For the most complete solution, the Master Kit includes all of the above along with an OEM ACDelco fuel filter and a 16oz bottle of Merchant Automotive Diesel Fuel Treatment, perfect for those who want a comprehensive refresh and better filtration performance.
Wondering about deleting the factory WIF sensor? The OE plastic sensor has a history of being inaccurate, brittle, and prone to damage during filter changes. Merchant Automotive’s aluminum delete plug eliminates those issues without triggering any warning lights or affecting your truck’s warranty. Just be sure to use a metal-body filter like the ACDelco for proper fitment, as some plastic filters may not seal correctly with the rigid aluminum threads.
Whether you're just fixing a leak or going for a full-on upgrade, this rebuild kit lineup gives you reliable options to get your Duramax fuel system running clean and strong again.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Works Great, A Lot of Elbow Greese, but Worth the Effort!
Transformed our motorhome exterior . It looks new, brighter, and no haze! It helped to watch the instruction videos on YouTube.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Wow just wow. It works great.
I have a 2017 vengeance and it has had a bit of sun even though it stays in a building when not used. It was getting a bit of fading even though I polish it each year. I wanted to try something and this was what I settled one after looking. Yes it is a bit of work on a 43’ fifth wheel. I ordered 2 kits but after a week of working on it after work we went camping and where next to a week old fifth wheel and he asked what I used to make it look better than his. It has a mirror finish on it now. After 6 months it still looks great and it’s durable and ease of use. What an effective product
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Reviewed in the United States on September 23, 2024
★★★★★ 5
Great product for rv
This is an excellent product. The front of our camper was very faded from the sun even though we keep it under a cover. After four coats, it looks like a different RV. We are going to do the entire camper. The difference is amazing. You will be so happy with the results. We would give it a 10 if possible.
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Reviewed in the United States on October 19, 2025
★★★★★ 5
Amazing fiberglass restoration.
So easy to use and fabulous results. A few years back I had tried Maguires products to restore the shine on a 5th wheel. That was so labor intensive and the results were struggled to achieve faded quickly. I hesitated to Poli Glow due to the cost and our prior attempts lackluster results. I was able to get the restoration kit at a discount on Black Friday through the stores website and tackled the camper with the temps between 60-90 as instructed. I bought 2 of those kits just to find out that due to the climate and UV exposure the number of coats I would need for the Poli Glow was going to exceed the amount I had on hand through the 2 restoration kits. So I had to scramble to buy another bottle of Poli Glow. Applying this product is just time consuming and not difficult. Make sure to properly prepare the surface before using poliglow. The whole system turn a badly oxidized camper into a shiny finish. I am truly shocked. Hopeful the results will last a while.
5th wheel camper 40 foot long.
I have used 3 poliglow bottles (12 coats), 1 bottle poli ox, 1.5 bottles of Poli wash (of course, not in that order). I potentially need 1 more bottle of Poli Glow to finish nose cone/basement area (basement area is still in good condition so may not do this area if I can get the nose cone with the remainder of the Poli glow I have.)
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Reviewed in the United States on January 19, 2026
★★★★★ 4
Worth the time and effort.
After proper surface prep and 6 applications, my badly sun damaged RV shined like new, with many compliments. However, after a few months under the cover, the fiberglass surfaces that were in contact with the occasionally wet cover in the Florida sun discolored badly, and will have to be wet sanded and the coating re-applied. Also, the polish does not hold up well where boat fenders rub against the coating, and it wears away in cockpit areas that are heavy hand traffic, like hatchways and around handrails.
Overall a decent product, I will probably re-apply in a couple seasons.
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Reviewed in the United States on September 23, 2025