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PN 4001 -- L6 - CUMMINS NT855 ENGINE, Exhaust Manifold Gasket Set, 2" x 2-5/16" Port Size, 6 Piece Set PN 4002 --  CUMMINS - L6, NT855 Engine, Turbo Mount Inlet Gasket, 1(ea) PN 4006 -- DIESEL REMFLEX® HD CUMMINS ENGINE  Exhaust Manifold Gasket Set 1-3/4 Port Size 2 Bolt Holes 3-1/16" Spacing Fits: 8.3L & 9L Years 2006-2010 Cummins PN3937479 & Case IH #84368103 6 Piece Set
DIESEL - CUMMINS 5.9L ('98-'06) & 6.7L ('07-'13) Engines, 6 Piece Set 3-1/4" x 2-1/4" Port Size Fits: 8.3L & 9L Years 2006-2010
Cummins PN3937479 & Case IH #84368103 6 Piece Set
PN 4007 -- DIESEL REMFLEX® HD CATERPILLAR  ENGINE  Exhaust Manifold Gasket Set  Port Size 2" Wide X 2-1/2" Tall  (2) 25/64 Bolt Holes @ 3-1/2" Spacing  Fits: #3408 ENGINE  8 Piece Set PN 4008 -- DIESEL REMFLEX® HD CATERPILLAR  ENGINE  Exhaust Manifold Gasket Set  Port Size 2" Wide X 2-1/2" Tall  (2) 25/64 Bolt Holes @ 3-1/2" Spacing  Fits: #3412 ENGINE 12 Piece Set PN 4009 -- DIESEL - CUMMINS 8.3L Engine, Exhaust Manifold Gasket Set: 2-1/6" Round Port w/ (2) 7/16" Bolt Holes @ 3-3/8" Spacing, Manifold Applications, 6 Piece Set
CATERPILLAR  ENGINE Port Size 2" Wide X 2-1/2" Tall (2) 25/64 Bolt Holes @ 3-1/2" Spacing Fits: #3408 ENGINE 8 Piece Set CATERPILLAR  ENGINE Port Size 2" Wide X 2-1/2" Tall (2) 25/64 Bolt Holes @ 3-1/2" Spacing Fits: #3412 ENGINE 12 Piece Set CUMMINS 8.3L Engine, Exhaust Manifold Gasket Set:1-7/8" Round Port (2) 7/16" Bolt Holes @ 3-3/8" Spacing, Manifold Applications, 6 Piece Set
PN 4010 --  CUMMINS - DIESEL - CUMMINS 5.9L ('98-'06) & 6.7L ('07&1/2-'18) Engines, Exhaust Manifold Gasket Set: 1-3/4" Round Port, 6 Piece Set PN 4011 -- DIESEL REMFLEX® HD LISTER GENERATOR, 1(ea) PN 6013 --  Mopar, L6, 5.9L ('98-'06), 6.7L ('07&1/2-'18) Cummins Turbo Diesel 24 Valve,1(ea)
DIESEL - CUMMINS 5.9L ('98-'06) & 6.7L ('07&1/2-'18) Engines, 6 Piece Set LISTER GENERATOR
Port Size: 1-1/2" Round Port (Off Set)
1 Each
For Turbo Up-Pipe Gasket see PN 6018
Inline 6 cylinder engine, exhaust manifold/header gasket
PN 6017 --  Mopar L6 - 5.9L ('88-'98) Cummins Turbo Diesel 12 Valve "6BTA5.9", 1-7/16" x 1-15/16" Square Port,  1(ea) PN 6018 -- Mopar 5.9L ('88-'06) 12 & 24 Valve, Cummins Turbo Diesel 1/set PN 6039 -- MOPAR 6.7Liter Cummins ('07&1/2 thru '18) DIESEL TURBO MOUNT GASKET "T4-I" DESIGNATION 1-7/8" X 3-1/8" Rectangular Port Bolt Spacing "A" Dim = 2-5/32", "B" Dim = 3-19/32" 1 Each
For Turbo Up-Pipe Gasket see PN 6018
Inline 6 cylinder engine, exhaust manifold/header gasket
Turbo, Manifold to Up-Pipe Gasket
Use with PN 6013 or PN 6017
6.7Liter Cummins ('07&1/2 thru '18)
DIESEL TURBO MOUNT GASKET
"T4-I" DESIGNATION
   
 
Remflex Performance Promise

• Seals Warped Flanges:

Remflex exhaust gaskets come in a standard 1/8-inch thickness and are designed to crush 50%. This allows them to fill gaps in the flange surface up to 1/16-inch! Remflex Performance Promise


• Won’t Burn Out:

100% flexible graphite construction means Remflex gaskets are good for up to 3,000 degrees F—far exceeding that of any vehicle’s exhaust system temperature!

• No Re-Torquing Necessary:

Remflex exhaust gaskets rebound 30%, creating an optimum seal that eliminates the need to re-torque!


About Remflex
Remflex’s unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees—day after day, week after week, year after year. Now, we’re bringing this technology to enthusiasts of all kinds to eliminate exhaust leaks for good! Whether you have an old pick-up that needs a manifold gasket, or a race car with custom-built headers, you can be assured that Remflex exhaust gaskets will work properly the first time, every time.

The Science

Remflex gaskets work because they solve the two main problems associated with sealing an exhaust flange: Warping, and gasket failure.

Warped Reality

A common misconception is that, if you spend a lot of money for high-quality headers with thick flanges, leaks will not be an issue. In truth, a thicker flange does help, but it can’t solve the problem of warping altogether. Constant thermal cycling, especially in high performance and/or high-load environments, causes warping of header flanges and cast iron exhaust manifolds--even the exhaust flange of the cylinder head itself.

Once the sealing surface is warped, leaks are imminent—and once there is a leak, pitting of the exhaust port sealing surface usually follows. A new set of average gaskets won’t fix the problem—but Remflex gaskets, with a 50% crush built in—can seal gaps as large as 1/16-inch. And unlike traditional gaskets, they won’t shrink, so they never require re-torquing.  

If you can’t take the heat…

Curiously, the number one cause of exhaust gasket failure is heat—the very thing exhaust gaskets are supposed to withstand. That’s because traditional exhaust gaskets are made of composite materials—blends of natural fibers and synthetic compounds that are bound together using rubber. Simply put, it’s only a matter of time until the extreme temperature in the vehicle’s exhaust system burns the gasket’s composite materials away, resulting in an exhaust leak.

You’ve no doubt experienced the pungent odor that arises from the engine compartment after you install a new set of the top-brand exhaust gaskets. That’s the smell of the rubber binders in the composite materials that begin to burn out almost immediately. And once the rubber overheats, it begins to shrink, as well has harden. That’s why you are instructed to re-torque the gaskets regularly, and why an exhaust leak will develop if you don’t. Remflex exhaust gaskets are made from 100% flexible graphite and can withstand up to 3,000 degrees F—so they are not affected by exhaust system, and won’t burn out, shrink, or leak. Not now, not ever!