Description
Overview:
This square-section engine key is a Honda-manufactured component used to lock pulleys, gears, or couplings to the crankshaft, maintaining positive drive and correct alignment in small petrol engines. It is made from durable steel with a 4.78 mm x 4.78 mm x 38 mm profile (0.188 in x 0.188 in x 1.50 in) to match Honda OEM specifications. The precise sizing helps prevent slippage under load and protects the mating keyway from wear. Suitable for a wide range of compact Honda power units commonly found in generators, pumps, pressure washers, and compactors, including models such as G100K1 and GX160. Ideal as a like-for-like replacement when refurbishing engines or replacing worn keys during routine servicing.
Key Features:
- Precision 3/16 in (4.78 mm) square profile, 1.50 in (38 mm) length for an accurate fit
- Steel construction for strength and long service life in demanding environments
- Maintains correct drive between shaft and component to reduce slippage and shear risk
- Helps protect keyway surfaces by distributing torque correctly
- Consistent OEM-style tolerances for repeatable fitting and reliable performance
- Compact form factor for easy handling and installation with minimal tools
- Suitable for a broad range of Honda GX- and G-series utility engines
- Useful spare to keep on hand for quick repairs and preventative maintenance
- Replaces worn or damaged keys to restore original engine functionality
Typical Applications:
Commonly used on Honda-powered equipment such as generators, water pumps, pressure washers, plate compactors, lawn and garden machinery, and small construction tools. The key secures pulleys, timing or governor gears, and couplings to the crankshaft or auxiliary shafts, ensuring stable torque transmission and correct alignment after servicing or component replacement.
Also known as:
Parallel key, shaft key, square key, keyway key, machine key, drive key, crankshaft key, replacement engine key.
Fits Models:
G100K1, G100K2, GX100, GX100U, GX120K1, GX120T1, GX120T2, GX120U1, GX120UT1, GX120UT2, GX160H1, GX160K1, GX160T1, GX160T2, GX160U1, GX160UT1, GX160UT2, GX200, GX200H, GX200T, GX200T2, GX200U, GX200UT, GX200UT2
Alternate Part Numbers:
90745ZE1600
Product Specifications
| L&S Part No. | 90745 ZE1 600 |
|---|---|
| Manufacturer | Honda |
| OEM No. | 90745ZE1600 |
| Unit of Sale | 1 |
| Applications | G100K1, G100K2, GX100, GX100U, GX120K1, GX120T1, GX120T2, GX120U1, GX120UT1, GX120UT2, GX160H1, GX160K1, GX160T1, GX160T2, GX160U1, GX160UT1, GX160UT2, GX200, GX200H, GX200T, GX200T2, GX200U, GX200UT, GX200UT2 |
| Machine Type | Engines |
| Fits Brands | Honda |
| Fits Models | GX100 (GCANM) | GX100U (GCAGK) | GX120K1 (GC01) | GX120T1 (GCAAT) | GX120UT1 (GCAGT) | GX200 (GCAE) | GX120U1 (GCAHK) | GX120UT2 (GCBMT) | GX200 (GDAB) | GX200T (GCACT) | GX120T2 (GCBNT) | GX160K1 (GC02) | GX160H1 (GCAAH) | GX160K1 (GCAAK) | GX160T1 (GCABT) | GX160U1 (GCACK) | GX160UT1 (GCAFT) | GX200UT (GCAHT) | GX160UT2 (GCBPT) | GX160T2 (GCBRT) | GX200U (GCAJK) | GX200H (GCARH) | GX200UT2 (GCBTT) | GX200T2 (GCBUT) | G100K1 | G100K2 |
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