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Intake Gasket for Honda GX390 Big Block Clone Intake Gasket for Honda GX390 Big Block Clone

Intake gasket for Honda GX340, GX390 and big block clone engines.

Our Price: $1.95
Insulator Gasket for Honda GX390 Insulator Gasket for Honda GX390

Insulator gasket for Honda GX390 engines.

Our Price: $3.25
Copper Exhaust Header Gasket for Honda GX390 Copper Exhaust Header Gasket for Honda GX390

Bullfrog Performance Products copper exhaust header gasket for Honda GX240, GX270, GX340, GX390, GX610, GX620 and GX690.  Will also fit Predator 420cc engines and many other big block clone engines.

Our Price: $5.00
Crankshaft Oil Seal for Honda GX390 Crankshaft Oil Seal for Honda GX390

Crankshaft oil seal fits Honda GX340, GX390, 420cc and 460cc engines.  Use this seal on both the PTO or Flywheel side.  Engine requires two per engine so order a quantity of two per engine.

Our Price: $5.00
Dipstick for Honda GX390, 460cc Big Block Dipstick for Honda GX390, 460cc Big Block

Dipstick fits Honda GX240, GX270, GX340, GX390, GX440 and 460cc big block engines.

Our Price: $6.00
Oil Fill Plug for Honda GX390, 460cc Big Block Oil Fill Plug for Honda GX390, 460cc Big Block

Oil fill plug fits Honda GX240, GX270, GX340, GX390, 440cc and 460cc big block engine.

Our Price: $6.00
Insulator with Pulse Fitting for Honda GX390 Insulator with Pulse Fitting for Honda GX390

Insulator with pulse fitting for Honda GX390 engines.

Our Price: $8.95
Side Cover Gasket, 7 Bolt Side Cover Honda GX390, 420cc Big Block Side Cover Gasket, 7 Bolt Side Cover Honda GX390, 420cc Big Block

Honda GX390 side cover gasket.  Fits all 7 bolt GX390 engines and 7 bolt 420cc big block engines.

Our Price: $10.00
Head Gasket fits Honda GX390 .010" Thick Head Gasket fits Honda GX390 .010" Thick

This head gasket fits Honda GX390 88mm bore and is .010" thick.

Our Price: $12.95
Head Gasket fits Honda GX390 88mm Bore, Graphite Head Gasket fits Honda GX390 88mm Bore, Graphite

This head gasket is a graphite head gasket and will fit the Honda GX390 engine with 88mm bore.

Our Price: $15.00
Gasket Set, Honda GX390 Gasket Set, Honda GX390

Gasket set for Honda GX390 engines.

Our Price: $15.00
Head Gasket GX390 MLS Head Gasket GX390 MLS

Multi Layer Steel head gasket that fits the Honda GX390 engine.  Gasket has 89mm bore to fit the stock bore size on the Honda GX390.

Our Price: $15.00
Copper Head Gasket, Honda GX390, 460cc, 500cc Big Block Copper Head Gasket, Honda GX390, 460cc, 500cc Big Block

Copper head gasket available in a variety of bore and thickness ranges for the big block Honda GX390, 460cc, 500cc engines.  Select the gasket below that fits your build:

Our Price: $18.00
Magnetic Oil Drain Plug, Honda GX390 Magnetic Oil Drain Plug, Honda GX390

Bullfrog Performance Products magnetic oil drain plug for Honda GX390 and big block clones.  Billet aluminum drain plug includes the copper gasket.  Our plug is a nice upgrade to catch any signs of engine trouble by catching the magnetic particles that may be in your engine oil.

Our Price: $19.00
Crankcase Cover Gasket and ARP Bolt Kit Honda GX340, GX390 Crankcase Cover Gasket and ARP Bolt Kit Honda GX340, GX390

Crankcase cover gasket and ARP side cover bolt fastener kit for the Honda GX340 and GX390 side cover. Changing out a cam or making internal repairs or just plain building a new engine from scratch then you will need our kit to get maximum seal and clamp load your side cover needs to hold the bottom end together.

Our Price: $59.50