Trkimal GY6 150cc Cylinder Head Assembly Valves
- 150cc 4-stroke scooter-style engines
- 57.4mm bore, non-EGR type
- Cylinder head with valves assembled
- Gaskets, spark plug, 4 studs included
- 2 pounds, 5.9 x 5.5 x 3 inch package
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A complete cylinder head with valves, gaskets, spark plug and studs for 150cc scooter style engines. It is for non-EGR engines only, so check your head type before ordering.
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ASIN: B07Z629KJCModel: TRKIMAL-00163-1Category: Cylinder Heads
Overview
Not a bare casting, this is a cylinder head assembly with its valves already fitted, supplied together with gaskets, a spark plug and four studs. It is sold for 157QMJ and related 150cc engines on scooters, mopeds, ATVs and go karts.
Getting head, valves, gaskets and studs in one pack saves hunting down small parts during a rebuild. The limitation is the narrow match: bore size and the non-EGR note must agree with the engine, and the seller lists many brand models without verifying each.
Who it's for
Scooter, moped and small ATV owners with a 150cc four-stroke engine in the 152QMI or 157QMJ family. Owners of a different displacement, or an EGR-equipped head, need another assembly.
Pros and cons
- Valves already installed
- Gaskets and studs included
- Spark plug supplied
- Wide list of compatible scooters
- Non-EGR engines only
- Bore must match exactly
- Material and finish not described
Performance notes
Valve seating and head gasket sealing decide compression, so the head face and the studs need to be clean and torqued evenly. The bore size listed must match the cylinder, since a mismatch will not seal.
Specifications
| Model | TRKIMAL-00163-1 |
|---|---|
| Dimensions & fit | |
| Engine | 150cc 4-stroke, 152QMI / 157QMJ |
| Bore size | 57.4mm |
| Item weight | 2 pounds |
| Package dimensions | 5.9 x 5.5 x 3 inches |
| Included components | |
| Included | Cylinder head with valves, gaskets, spark plug, 4 studs |
| Other details | |
| EGR type | Non-EGR |
Frequently asked questions
What is in the Trkimal cylinder head box?
The cylinder head with valves, gaskets, a spark plug and studs. The title says four studs.
Will the Trkimal head fit a smaller scooter engine?
No. It is listed for 150cc four-stroke engines with a 57.4mm bore.
Does it fit an EGR engine?
No. The title marks it as the non-EGR type.