Description
Overview:
The Gear / Pinion for Crankshaft on JAP 4/3 Engines is a genuine JAP component (MPN 19633) designed to restore correct drive and timing in classic JAP 3 and JAP 4 engines. Manufactured from durable steel, this crankshaft gear transfers motion reliably to the engine's timing and ancillary drives, supporting smooth running and long service life. It is an ideal direct replacement when the original gear is worn or damaged, helping to reduce noise, vibration, and premature wear in mating parts. Supplied as unused old stock, it maintains original factory specification for restorers and maintainers aiming to keep vintage engines authentic and dependable. Typical of period parts, minor cosmetic tarnishing may be present without affecting function or fit.
Key Features:
- Genuine JAP part for assured compatibility and correct fit on JAP 3 and JAP 4 engines
- MPN 19633 for accurate identification and parts matching
- Robust steel construction for high wear resistance and stable operation under load and heat
- Precisely machined tooth form to maintain correct timing and smooth power transmission
- Direct replacement for a worn crankshaft gear; no modifications typically required
- Unused old stock preserving original manufacturing quality
- Helps reduce backlash and noise when replacing a tired gear
- Suitable for period-correct restorations and routine engine refurbishment
- May show light age-related tarnish consistent with vintage parts, with no impact on performance
Typical Applications:
Used during overhaul or restoration of classic JAP 3 and JAP 4 engines found in vintage construction, agricultural, and horticultural equipment. Suitable when addressing timing issues, gear wear, or noisy operation, and whenever returning an engine to original specification is required.
Also known as:
Timing gear, crank gear, primary drive pinion, crankshaft drive gear, spur gear (crank), engine timing pinion.
Fits Models:
JAP 3, JAP 4
Alternate Part Numbers:
19633
Product Specifications
| L&S Part No. | 19633 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | JAP |
| OEM No. | 19633 |
| Unit of Sale | 1 |
| Machine Type | Engines |
| Fits Brands | JAP |
| Key Features | - Genuine JAP part ensures fit on JAP 3 and JAP 4 engines - Robust steel construction for high wear resistance - Precisely machined tooth form for correct timing - Direct replacement; no modifications typically required - Unused old stock maintains original manufacturing quality |
| Fits Models | JAP 4, 3 |
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