Looking to upgrade or modify your Hummer H3 with aftermarket parts from Cometic Gasket? At Tunersports.com we carry a great selection of their parts for your vehicle.
From air intake systems, exhaust gaskets, exhaust, mufflers & tips or valve cover gaskets we have 169 parts available for your H3, all with free shipping to the Continental US 48 States.
For more information on Cometic Gasket, you can visit the official Cometic Gasket website.

OUT OF STOCK Cometic Gasket Head Gaskets C15739-063Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 3.940in Bore - 1/2in Studs $282.56
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OUT OF STOCK Cometic Gasket Head Gaskets C15739-071Cometic Gasket GM LS Gen-3/4 SB V8 .071in DST Cyl. Head Gasket - 3.940in Bore - 1/2in Studs $282.56
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OUT OF STOCK Cometic Gasket Head Gaskets C15740-063Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.040in Bore - 1/2in Studs $282.56
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OUT OF STOCK Cometic Gasket Head Gaskets C15740-071Cometic Gasket GM LS Gen-3/4 SB V8 .071in DST Cyl. Head Gasket - 4.040in Bore - 1/2in Studs $282.56
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IN STOCK - LOW Cometic Gasket Head Gaskets C15741-063Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.150in Bore - 1/2in Studs $282.56
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OUT OF STOCK Cometic Gasket Head Gaskets C15741-071Cometic Gasket GM LS Gen-3/4 SB V8 .071in DST Cyl. Head Gasket - 4.150in Bore - 1/2in Studs $282.56
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OUT OF STOCK Cometic Gasket Head Gaskets C15749-063Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs $282.56
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IN STOCK - LOW Cometic Gasket Head Gaskets C15749-071Cometic Gasket GM LS Gen-3/4 SB V8 .071in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs $282.56
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OUT OF STOCK Cometic Gasket Head Gaskets C5505-052Cometic GM LS Series V8 4.040in bore .052 inch MLX Head Gasket $131.42
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OUT OF STOCK Cometic Gasket Head Gaskets C5489-092Cometic Gasket MLS Cylinder Head Gasket GM LS Gen-3/4 Small Block V8 .092in 4.100in Bore $143.09
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IN STOCK Cometic Gasket Head Gaskets C5489-040Cometic GM LS1 SB 4.100in Bore .040in MLS-5 Head Gasket $102.70
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$131.81
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IN STOCK - LOW Cometic Gasket Head Gaskets C5505-060Cometic GM LS Series 102.62mm Bore .060 in MLX-5 Head Gasket $129.79
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IN STOCK - LOW Cometic Gasket Head Gaskets C15522-040Cometic GM LS1/LS2/LS3/LS6 Gen-III/IV Small Block V8 4.080in Bore .040in MLS Cylinder Head Gasket $102.70
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IN STOCK - LOW Cometic Gasket Head Gaskets C15741-063Cometic Gasket GM LS Gen-3/4 SB V8 .063in DST Cyl. Head Gasket - 4.150in Bore - 1/2in Studs $282.56
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IN STOCK - LOW Cometic Gasket Head Gaskets C15749-071Cometic Gasket GM LS Gen-3/4 SB V8 .071in DST Cyl. Head Gasket - 4.100in Bore - 1/2in Studs $282.56
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IN STOCK - LOW Cometic Gasket Head Gaskets C5489-045Cometic GM LS1 SB 4.100in Bore .045in MLS-5 Head Gasket $102.70
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IN STOCK - LOW Cometic Gasket Exhaust Gaskets C5818-030Cometic GM LS1 5.3L/5.7L/6.0L .030 inch MLS Exhaust Gaskets (Pair) $60.03
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