Home > Engines > OEM Parts & Gaskets

OEM Parts & Gaskets

Sort By:
Page of 2
Lash Cap for GX390/Clone

Lash Cap for GX390/Clone

OEM Lash Cap on our 460cc Clones

Also fits GX340, GX390 & GX420 / GX440 Clones

Our Price: $1.00
Carb/Intake Stud - Long - 132mm

Carb/Intake Stud - Long - 132mm

The longest Carburetor/Intake Stud for the GX390 & Clone that we offer, great for use with our Billet Air Filter Adapters and needed on certain clone engines such as the Duromax when using an aftermarket air filter.

132mm Long

Our Price: $1.99
Carb/Intake Stud - Short - 106mm

Carb/Intake Stud - Short - 106mm

The shortest Carburetor/Intake Stud for the GX390 & Clone that we offer, great for use with our OEM High-Flow Air Boxes

106mm Long

Our Price: $1.99
Exhaust Gasket

Exhaust Gasket

OEM Exhaust Gasket on our GX440 Clones

Also fits GX340, GX390 & GX420 Clones

Our Price: $2.00
Oil Dipstick for GX340/GX390 & 420/440 Clones

Oil Dipstick for GX340/GX390 & 420/440 Clones

Oil Dipstick Cap for our 460cc Clone Engines

Our Price: $3.00
Crankshaft Oil Seal for GX390/Clone Valve Stem Oil Seal for GX390/Clone

Valve Stem Oil Seal for GX390/Clone

OEM Valve Stem Oil Seal on our GX460 Clones
Also fits GX340, GX390 & GX420/GX440 Clones

Our Price: $3.00
Spark Plug Cap

Spark Plug Cap


Our Price: $4.99
OEM Valve Lock Retainers for GX390/Clone

OEM Valve Lock Retainers for GX390/Clone

OEM Valve Retainers on our 460cc Engines. Will also fit the GX340, GX390 & 420/440cc clones

Our Price: $4.99
OEM Guideplate for our 460cc Engine & GX390/Clones

OEM Guideplate for our 460cc Engine & GX390/Clones


OEM Guideplate for our 460cc Engines, will also fit GX340, GX390 & 420/440cc Clones


Will fit up to a .250" Pushrod

Our Price: $4.99
Crankshaft Oil Seal for GX390/Clone Crankshaft Oil Seal for GX390/Clone

Crankshaft Oil Seal for GX390/Clone

OEM Crankshaft Oil Seal on our GX440 Clones
Also fits GX340, GX390 & GX420 Clones

Our Price: $5.00
Starter Hole BlockOff Plate

Starter Hole BlockOff Plate

OEM Starter Hole BlockOff Plate for our GX440 Clones.

All GX440 Clones come with Electric Start Crankcases so the Recoil Start versions can be converted to Electric Start at anytime.

Our Price: $5.00
Intake Gaskets for GX340/GX390 & Clones

Intake Gaskets for GX340/GX390 & Clones

Includes 3 OEM Intake Gaskets (2pc Cylinder Head to Isolator & Carb & 1pc Carb to Airbox)

Fits all GX390s and Clones

Our Price: $6.00
Isolator w/Pulse Fitting

Isolator w/Pulse Fitting


Need to get engine pulse to run your fuel pump? Dont want to mess with drilling and tapping your isolator or valve cover? This part is for you!


Most people that try to drill and tap these on their own end up breaking them, avoid the hassle and buy it once.

Our Price: $7.99
Side Cover Gasket - 10 Bolt

Side Cover Gasket - 10 Bolt

  • OEM Crankcase Side Cover Gasket
  • 10-Bolt Style exclusive to our 440cc Engines
  • Will NOT fit 7-bolt blocks!

 

Our Price: $9.99
Composite Headgasket - .045"

Composite Headgasket - .045"

94mm Diameter

.045" Thickness

**Not Re-Usable**

Our Price: $9.99
Multi-Layer Steel Headgasket - .020" - GX390 & Clones

Multi-Layer Steel Headgasket - .020" - GX390 & Clones

Multi Layer Steel Performance Headgasket for our GX440 Clone engines.

  • 94mm Diameter
  • .020" Compressed Thickness
  • OEM on our 460cc Engines

Our Price: $9.99
Valve Cover for GX390/Clone

Valve Cover for GX390/Clone


OEM Valve Cover on our 440cc Clone Engines.


Oil Seal Included.


Bolt not Included.

Our Price: $9.99
Rocker Arms & Studs (Set of 2)

Rocker Arms & Studs (Set of 2)

Set of (2) Rocker Arms with Studs & Hardware. Compatible with GX340/GX390 & Clones

Our Price: $9.99
OEM Crankshaft Bearing for GX390/Clone

OEM Crankshaft Bearing for GX390/Clone


This is the OEM Crankshaft bearing in our 460cc engines. It will also fit the GX340, GX390 & 420/440cc Clones

Our Price: $9.99
Composite Headgasket - .060"

Composite Headgasket - .060"

94mm Diameter

.060" Thickness

**Not Re-Usable**

Our Price: $9.99
Fan Shroud for GX390/Clone - Black

Fan Shroud for GX390/Clone - Black

OEM Fan Shroud on our 460cc Engines. Will also fit the GX340, GX390 & 420/440cc clones

Our Price: $12.99
OEM Lifters for GX390/Clone

OEM Lifters for GX390/Clone

OEM Lifters on our 460cc Engines. Will also fit the GX340, GX390 & 420/440cc clones

Our Price: $14.90
OEM Piston Rings for GX440 Clone - 92mm

OEM Piston Rings for GX440 Clone - 92mm

OEM Piston Ring set for our 440cc Clone Engines.

92mm Bore

File-Fit Recommended

Honing of the cylinder to break the glaze recommended before installation!

Our Price: $14.99
OEM Ignition Coil for GX390 & 420/440/460 Clones

OEM Ignition Coil for GX390 & 420/440/460 Clones

The OEM Ignition Coil on our 440cc & 460cc Clones. It will also fit a GX340, GX390 & the 420cc Clones.

Kill wire & Spark Plug boot included

Our Price: $14.99
OEM Balancer Shaft for GX390/Clone

OEM Balancer Shaft for GX390/Clone

This is the OEM Balance Shaft in our 460cc engines. It will also fit the GX340, GX390 & 420/440cc Clones

Pre-Clearanced for a Billet Rod & 69mm Stroker Crankshaft!

Our Price: $14.99
OEM 92mm Dished Piston for GX390/Clone

OEM 92mm Dished Piston for GX390/Clone

This is the OEM Dished Piston in our 460cc engines. -7cc Dish, 92mm Diameter

Will also fit 440cc engines.

Our Price: $14.99
OEM Valves for our 460cc Engine

OEM Valves for our 460cc Engine


OEM Intake & Exhaust Valve on our 460cc Racing Engines.


36mm Intake, 31mm Exhaust - Stainless with Hardened Tips


Good to .360" Lift


Uses "Slip-Lock" Retainers

Our Price: $14.99
Camshaft OEM Camshaft for GX390/Clone, 420cc, 440cc

OEM Camshaft for GX390/Clone, 420cc, 440cc

This is the OEM Camshaft in our GX440 Clone Engines. It also fits all GX340/GX390s & Most GX420 Clones.

  • Intake Duration : ~ 220* @ .050" Lift
  • Exhaust Duration : ~ 210* @ .050" Lift
  • Intake Lift : ~ .260"
  • Exhaust Lift : ~.240"
  • 110 LSA

Our Price: $19.99
OEM Flywheel w/Ring Gear for GX390 & 420cc - 460cc Clone

OEM Flywheel w/Ring Gear for GX390 & 420cc - 460cc Clone

OEM Flywheel w/Ring Gear for GX390, 420cc , 440cc and 460cc Clone Engines

Our Price: $24.99
OEM Recoil/Pull Starter

OEM Recoil/Pull Starter

The OEM Recoil Starter for our GX460 Clones. They will also fit the GX340, GX390 & GX420 / GX440 Clones.

Our Price: $24.99