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Description
Merchant Automotive 450000C Engine Gasket Set (With Head Gaskets)The Merchant Automotive 450000C Engine Gasket Set (With Head Gaskets) from GAP is the kit you need when rebuilding your Duramax engine. If you are replacing blown head gaskets or rebuilding an LB7 Duramax diesel engine, you are going to need quite a few parts to get the job done. Merchant Automotive has put together a kit that includes components you need to help you get the job done. Kit Includes: Grade C Head Gaskets (1) Injector Cup O ring Kit,
The Merchant Automotive 450000C Engine Gasket Set (With Head Gaskets) from GAP is the kit you need when rebuilding your Duramax engine. If you are replacing blown head gaskets or rebuilding an LB7 Duramax diesel engine, you are going to need quite a few parts to get the job done. Merchant Automotive has put together a kit that includes components you need to help you get the job done.
Kit Includes:
Grade C Head Gaskets
(1) - Injector Cup O-ring Kit, LB7, 2001-2004 Duramax 16 Pack of GM 94051259
(1) - Fuel Line Banjo Seal at FICM, Duramax, 2 per package
(1) - Small LB7 Injector Return Line Seal, Duramax Pack of 3
(2) - LB7 Injector Seal Kit 2001-2004
(2) - Red Threadlocker
(1) - Upper Bypass Pipe Seal at Thermostat Housing, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Bypass Pipe Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - Gasket - Exhaust Manifold To Up Pipe, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Lower Valve Cover Gasket, LB7, 2001-2004 Duramax
(1) - RTV Sealant, High Temp, Aluminum, 2.8oz LB7 LLY LBZ LMM LML, L5P 2001-2019 Duramax
(2) - Injector Return Line Kit, LB7, 2001-2004 Duramax 1x 98065992 and 4x 97228933
(1) - Upper Radiator Pipe Seal, LB7 LLY LBZ LMM, 2001-2010 Duramax
(2) - Thermostat Housing Crossover At Head Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Intake Pipe Seal, LB7 LLY, 2001-2005 Duramax
(1) - Turbo Inlet Gasket, LB7, 2001-2004 Duramax
(1) - Oil Fill Tube Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - Exhaust Manifold Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Heater Pipe Seal, LB7 LLY LBZ, 2001-2007 Duramax
Kit Includes:
Grade C Head Gaskets
(1) - Injector Cup O-ring Kit, LB7, 2001-2004 Duramax 16 Pack of GM 94051259
(1) - Fuel Line Banjo Seal at FICM, Duramax, 2 per package
(1) - Small LB7 Injector Return Line Seal, Duramax Pack of 3
(2) - LB7 Injector Seal Kit 2001-2004
(2) - Red Threadlocker
(1) - Upper Bypass Pipe Seal at Thermostat Housing, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Bypass Pipe Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - Gasket - Exhaust Manifold To Up Pipe, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Lower Valve Cover Gasket, LB7, 2001-2004 Duramax
(1) - RTV Sealant, High Temp, Aluminum, 2.8oz LB7 LLY LBZ LMM LML, L5P 2001-2019 Duramax
(2) - Injector Return Line Kit, LB7, 2001-2004 Duramax 1x 98065992 and 4x 97228933
(1) - Upper Radiator Pipe Seal, LB7 LLY LBZ LMM, 2001-2010 Duramax
(2) - Thermostat Housing Crossover At Head Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(2) - Intake Pipe Seal, LB7 LLY, 2001-2005 Duramax
(1) - Turbo Inlet Gasket, LB7, 2001-2004 Duramax
(1) - Oil Fill Tube Seal, LB7 LLY LBZ LMM LML, 2001-2016 Duramax
(2) - Exhaust Manifold Gasket, LB7 LLY LBZ LMM LML LGH, 2001-2016 Duramax
(1) - Heater Pipe Seal, LB7 LLY LBZ, 2001-2007 Duramax
WARRANTY INFO:
1 Year Limited
Note: Head Gaskets Included & Head Bolts NOT Included
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
4.6 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 4
Not indestructible, but the best I’ve found
Color: Onyx Black - Most Durable, Color: Onyx Black - Most Durable
This thing is unexpectedly heavy for its size. My 18 month old Giant Schnauzer is obsessed with fetch but destroys every ball she gets. The other brands marketed for extreme chewers tend to last about a day or two before they’re totally shredded. She’s had this one for about 2 weeks and it’s looking rough, but still holding together for the most part. I appreciate that as it comes apart it does so in little pieces rather than large chunks. While it’s far from indestructible, it’s the strongest I’ve found so far.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great product!
Color: Onyx Black - Most Durable
Great product! Quickly became my Pit Princess's favorite toy! The size, weight, and material is perfect for a big dog. Now we have fetch ball that has proven itself to be worthy!
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Reviewed in the United States on May 8, 2026
★★★★★ 3
good but not indestructible
Color: Onyx Black - Most Durable, Color: Onyx Black - Most Durable
pretty good but definitely not indestructible
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Yes!
Size: Medium
Durable. Squeak doesn't last forever with my aggressive chewers but crinkle does. Best balls.
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Reviewed in the United States on September 28, 2025
★★★★★ 5
Balls
Size: Medium
My dog loves chasing these balls. He seems to love the squeak! They fit the chuck it stick perfectly, and are great replacements for the originals that came with the stick.
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Reviewed in the United States on February 7, 2026