Product Description
The 140040/G Oil Pump Spindle is a high-precision shaft designed for Royal Enfield’s legendary cast-iron and early aluminum-engine motorcycles. It is a direct replacement for the older 140040 part number. Manufactured from hardened steel with a protective factory coating, this spindle is built to withstand the constant mechanical stress of the oil pump drive system.
As a genuine OEM part, it ensures perfect alignment with the oil pump worm gear and plungers. In many older “Bullet” models, a worn or damaged spindle can lead to reduced oil pressure, which is often identified by increased engine noise or overheating. Replacing this spindle during a major service or engine overhaul is a cost-effective way to guarantee long-term engine health and prevent catastrophic failure of the lubrication circuit.
Key Features:
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OEM Specification: 100% original Royal Enfield spare (PN: 140040/G) ensures factory-grade tolerances and fitment.
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High-Durability Construction: Made from premium-grade steel, heat-treated to resist wear and “scoring” on the contact surfaces.
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Direct Replacement: Fits seamlessly into the timing cover assembly of vintage and legacy Royal Enfield models.
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Corrosion Resistant: Finished with a protective coating to prevent rust during storage and initial operation.
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Critical Engine Protection: Maintains consistent oil circulation, reducing friction in the top-end and crankshaft.
Technical Specifications:
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Part Number: 140040/G (Replaces 140040)
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Material: Hardened Alloy Steel
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Weight: Approx. 300g
Vehicle Compatibility (Legacy Models):
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Royal Enfield Bullet 350 (Standard / Deluxe / G2 / B1)
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Royal Enfield Bullet 500 (Cast Iron Models)
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Royal Enfield Electra 4S/5S (Kick-start and Electric-start variants)
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Royal Enfield Machismo 350 / 500
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Note: This part is intended for Standard Old Models (1980–2009). It is not compatible with modern UCE (Classic 350/500) or J-Series engines.











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