Collection: Cometic Gaskets
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Cometic GM LMM/LLY Duramax Top End Gasket Kit - 4.130in Bore - .047in MLX Cylinder Head Gasket
No reviewsRegular Price $608.02 USDRegular PriceUnit price / per$653.79 USDSale Price $608.02 USDSale -
Cometic GM LMM/LGH Duramax Bottom End Gasket Set
No reviewsRegular Price $199.74 USDRegular PriceUnit price / per$214.77 USDSale Price $199.74 USDSale -
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Cometic GM LLY/LBZ Duramax Top End Gasket Kit - 4.100in Bore - .053in MLX Cylinder Head Gasket
No reviewsRegular Price $721.23 USDRegular PriceUnit price / per$775.52 USDSale Price $721.23 USDSale -
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Cometic GM LLY/LBZ Duramax Top End Gasket Kit - 4.100in Bore - .051in MLS Cylinder Head Gasket
No reviewsRegular Price $616.36 USDRegular PriceUnit price / per$662.75 USDSale Price $616.36 USDSale -
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Cometic GM LB7 Duramax Top End Gasket Kit - 4.100in Bore - .045in MLS Cylinder Head Gasket
No reviewsRegular Price $501.35 USDRegular PriceUnit price / per$539.09 USDSale Price $501.35 USDSale -
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Cometic GM LB7 Duramax Top End Gasket Kit - 4.130in Bore - .062in MLX Cylinder Head Gasket
No reviewsRegular Price $506.57 USDRegular PriceUnit price / per$544.70 USDSale Price $506.57 USDSale -
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Cometic GM LB7 Duramax Top End Gasket Kit - 4.130in Bore - .053in MLX Cylinder Head Gasket
No reviewsRegular Price $506.57 USDRegular PriceUnit price / per$544.70 USDSale Price $506.57 USDSale -
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Cometic Ford 6.0L Power Stroke Top End Gasket Kit-96mm Bore-.067in MLX Cyl Head Gasket-18mm Dowels
No reviewsRegular Price $846.36 USDRegular PriceUnit price / per$910.07 USDSale Price $846.36 USDSale -
Cometic Ford 6.0L Power Stroke Top End Gskt Kit-96mm Bore-w/out Cyl Head Gskts
No reviewsRegular Price $552.01 USDRegular PriceUnit price / per$593.56 USDSale Price $552.01 USDSale -
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Cometic Cummins 2007-2018 6.7L ISB Top End Gasket Kit-4.312in Bore-.067in MLX Cylinder Head Gasket
No reviewsRegular Price $466.85 USDRegular PriceUnit price / per$502.00 USDSale Price $466.85 USDSale -
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Cometic Cummins 2007-2018 6.7L ISB Top End Gasket Kit-4.312in Bore-.061in MLX Cylinder Head Gasket
No reviewsRegular Price $466.85 USDRegular PriceUnit price / per$502.00 USDSale Price $466.85 USDSale -
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Cometic Cummins 2007-2018 6.7L ISB Top End Gasket Kit-4.312in Bore-.054in MLX Cylinder Head Gasket
No reviewsRegular Price $466.85 USDRegular PriceUnit price / per$502.00 USDSale Price $466.85 USDSale -
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Cometic Cummins 5.9L ISB CR Top End Gasket Kit - 4.100in Bore - .072in MLX Cylinder Head Gasket
No reviewsRegular Price $466.85 USDRegular PriceUnit price / per$502.00 USDSale Price $466.85 USDSale -
Cometic Cummins 5.9L ISB Top End Gasket Kit - Without Cylinder Head Gasket
No reviewsRegular Price $283.88 USDRegular PriceUnit price / per$305.25 USDSale Price $283.88 USDSale -
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Cometic Cummins 5.9L ISB Top End Gasket Kit - 4.100in Bore - .072in MLX Cylinder Head Gasket
No reviewsRegular Price $436.95 USDRegular PriceUnit price / per$469.84 USDSale Price $436.95 USDSale -
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Cometic Cummins 5.9L ISB Top End Gasket Kit - 4.100in Bore - .067in MLX Cylinder Head Gasket
No reviewsRegular Price $436.95 USDRegular PriceUnit price / per$469.84 USDSale Price $436.95 USDSale -
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Cometic Cummins 3.9L 4BT Top End Gasket Kit - 4.100in Bore - .067in MLX Cylinder Head Gasket
No reviewsRegular Price $228.80 USDRegular PriceUnit price / per$246.02 USDSale Price $228.80 USDSale -
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Cometic Nissan SR16VE/SR20VE Top End Gasket Kit - 86.5mm Bore - .045in MLS Cylinder Head Gasket
No reviewsRegular Price $241.34 USDRegular PriceUnit price / per$259.51 USDSale Price $241.34 USDSale -
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Cometic Nissan SR16VE/SR20VE Top End Gasket Kit - 88mm Bore - .080in MLS Cylinder Head Gasket
No reviewsRegular Price $282.26 USDRegular PriceUnit price / per$303.51 USDSale Price $282.26 USDSale -
Cometic Nissan SR16VE/SR20VE Bottom End Gasket Kit
No reviewsRegular Price $48.83 USDRegular PriceUnit price / per$52.50 USDSale Price $48.83 USDSale -
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Cometic Nissan 1988-1993 SR20DE/SR20DET Top End Gskt Kit-87.5mm Bore-.040in MLS Cyl Head Gskt
No reviewsRegular Price $241.34 USDRegular PriceUnit price / per$259.51 USDSale Price $241.34 USDSale -
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Cometic Nissan 1988-1993 SR20DE/SR20DET Top End Gskt Kit-86.5mm Bore-.060in MLS Cyl Head Gskt
No reviewsRegular Price $271.14 USDRegular PriceUnit price / per$291.55 USDSale Price $271.14 USDSale -
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Cometic Subaru EJ205 Heads/EJ257 Block Hybrid-Engine Gskt Set-.045in MLS Cyl Head Gskt-100mm Bore
No reviewsRegular Price $295.54 USDRegular PriceUnit price / per$317.79 USDSale Price $295.54 USDSale -
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Cometic Honda B16A2 Head-B20 Block Hybrid Top End Gskt Kit-85mm Bore-.040in MLS Cyl Head Gskt
No reviewsRegular Price $221.64 USDRegular PriceUnit price / per$238.32 USDSale Price $221.64 USDSale
Let customers speak for us
from 266 reviews
Brian at FI Performance always goes above and beyond to take care of customers. I am a repeat customer and will continue to use them for all my needs. Thanks again Brian, amazing as always!

Exactly what I needed for my lowered C5. Full range of adjustment and quality made product.

Got a great product. In a very timely manner very happy

Great experience, order got messed up and Brian made sure to get it fixed and kept me up to date by texting me.

Exactly what I needed and had it next day

Customer service was great. Order shipped quick. Great value and the change to the car was better than expected. Wife no longer braces herself for the expansion joints and other Ohio road issues.

Brian was AWESOME to deal with, I changed my mind a few times on what I wanted to do with my c6z.. You can go down an endless rabbit hole when you get into these cars “while I’m in there “He was right there with updating pricing and I couldn’t ask for more.. Parts are parts and they will fail but it’s the service that sets the bar for a big purchase.. I haven’t driven the setup yet as it’s still being built but I’m sure he a phone call away to get it sorted..

Great customer service as always. Was on my doorstep within 48 hrs.

High quality parts with installation pics to come

Great support team helped me get the parts needed and got my order within the week.

Balancer was exactly what I needed. Everything as described and fast shipping. Thanks guys

Team went above and beyond to locate the part needed to get my can back on the road asap.

I finally got to install the intake which literally took 10 minutes. The power and launch difference was insane! You can hear the turbos spooling a lot better as well. I’m amazed by the difference just from the intake

Great product and communication.

I went with the super low, extended rear shocks , Swift 9/7k upgrade and absolutely love the stance and how the truck rides. It’s tight in the corners , smooth driving down the hwy and not bouncy at all. Thanks to Brian for getting me set up.