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Description
Merchant Automotive 10507 Oil Cooler Seal & Gasket KitEnsure you pick up the Merchant Automotive 10507 Oil Cooler Seal & Gasket Kit from GAP when replacing the faulty oil cooler on your 2001 2010 GM 6. 6L Duramax LB7 LLY LBZ LMM. Over time, your engine oil cooler's seals and gaskets can start to leak which can result in the catastrophic failure of your oil cooler or other vital engine components. This all in one Duramax engine oil cooler seal and gasket kit includes everything you need to either restore
Ensure you pick up the Merchant Automotive 10507 Oil Cooler Seal & Gasket Kit from GAP when replacing the faulty oil cooler on your 2001-2010 GM 6.6L Duramax LB7/LLY/LBZ/LMM. Over time, your engine oil cooler's seals and gaskets can start to leak which can result in the catastrophic failure of your oil cooler or other vital engine components. This all-in-one Duramax engine oil cooler seal and gasket kit includes everything you need to either restore or reinstall your engine oil cooler on your 2001-2010 Duramax engine. This kit includes the outlet gasket, inlet gasket, and oil cooler seal to replace an already disassembled oil cooler.
Kit Includes:
1x Engine Oil Cooler Seal, LB7 LLY LBZ LMM LML LGH, 2001-2016
1x Water Pump Outlet Gasket, LB7 LLY LBZ LMM LML, 2001 - 2016
1x Heater Outlet Pipe Seal At Oil Cooler, LMM, 2007.5-2010
1x Gasket - Oil Cooler Elbow, LB7 LLY LBZ LMM LML LGH, 2001-2016
1x Oil Cooler Seal, LB7 LLY LBZ LMM LML LGH L5P 2001-2018
1x Oil Cooler Seal, LB7 LLY LBZ LMM LML LGH, 2001-2016
1x Water Pump Pipe To Cooler Seal, LB7 LY LBZ LMM LML LGH L5P, 2001-2018
1x Engine Oil Cooler Outlet Gasket, LB7 LLY LBZ LMM LML LGH L5P, 2001-2018
1x Engine Oil Cooler Inlet Gasket, LB7 LLY LBZ LMM LML LGH L5P, 2001-2018
Application Notes:
From 2001-2004 original coolers used a flat metal gasket where the cooler separates. This kit will not replace that gasket and cooler should be replaced.
If you have the newer style oil cooler, you may also need to purchase an Oil Cooler To Block Seal.
Features:
- Direct Replacement
- OEM Like Fitment
- All-In-One Kit
- Everything Needed To Reseal Oil Cooler
- Great For Restoring Oil Cooler
- Helps To Repair Leaks
Kit Includes:
1x Engine Oil Cooler Seal, LB7 LLY LBZ LMM LML LGH, 2001-2016
1x Water Pump Outlet Gasket, LB7 LLY LBZ LMM LML, 2001 - 2016
1x Heater Outlet Pipe Seal At Oil Cooler, LMM, 2007.5-2010
1x Gasket - Oil Cooler Elbow, LB7 LLY LBZ LMM LML LGH, 2001-2016
1x Oil Cooler Seal, LB7 LLY LBZ LMM LML LGH L5P 2001-2018
1x Oil Cooler Seal, LB7 LLY LBZ LMM LML LGH, 2001-2016
1x Water Pump Pipe To Cooler Seal, LB7 LY LBZ LMM LML LGH L5P, 2001-2018
1x Engine Oil Cooler Outlet Gasket, LB7 LLY LBZ LMM LML LGH L5P, 2001-2018
1x Engine Oil Cooler Inlet Gasket, LB7 LLY LBZ LMM LML LGH L5P, 2001-2018
Application Notes:
From 2001-2004 original coolers used a flat metal gasket where the cooler separates. This kit will not replace that gasket and cooler should be replaced.
If you have the newer style oil cooler, you may also need to purchase an Oil Cooler To Block Seal.
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
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★★★★★ 5
Beautiful suit and quality
Size: 7 Years, Color: Bright Purple, Size: 7 Years, Color: Bright Purple
This is a gorgeous suit and the quality is excellent. Extremely impressed and will be purchasing another in a different color. This purple color is beautiful. Extremely impressed. Can’t beat the price.
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Great Quality and perfect Size
Size: 5T, Color: Black
Great quality and perfect size.
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Reviewed in the United States on May 1, 2026
★★★★★ 4
Runs small but great quality for the price
Size: 10 Years, Color: Black
I sized up hoping to get something a little bigger to grow into, however this suite runs small. If I had ordered the real size it would be too small. I ordered a 7 for my 6 year old and a 10 for my 8 year old. The size 10 was missing the suspenders and came with a real tie not a bow tie unlike what is in the description.
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Reviewed in the United States on April 20, 2026
★★★★★ 5
An awesome buy
Size: 8 Years, Color: Teal Blue, Size: 8 Years, Color: Teal Blue
Ordered for my son for my wedding. It is comfortable, it is beautiful, came in the right size and color.
Ir was so comfy he had it on for the whole wedding.
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Reviewed in the United States on December 26, 2025
★★★★★ 5
True to size and amazing quality
Size: 8 Years, Color: Bright Purple
Perfect for my boys and at a reasonable price that can’t be beat for all we got. Thank you.
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Reviewed in the United States on December 23, 2025