Royal Enfield UCE Oil Pump Drive Pinion – 572642/D | 350 / 500 / GT 535 UCE

Current genuine replacement pump-drive pinion for UCE oil-pump systems, superseding earlier 572642/A and 571166/B references where specified.

For the best fitment accuracy, order this spare by the exact Royal Enfield part number and motorcycle parts catalogue—not by appearance alone. This page includes model-generation checks, similar-part differences and workshop notes to reduce incorrect orders.

Part Identification

Detailed Product Description

572642/D is the updated Royal Enfield pump drive pinion used in the oil-pump drive system on supported UCE-family engines. Older references 572642/A and 571166/B are both documented in the same pump-drive role, with the parts system directing them to 572642/D.

The pinion transfers drive within the lubrication system. It is not the complete oil pump. A damaged, stripped or worn drive pinion can interrupt correct pump operation, so the component should never be chosen only because another small gear looks similar.

The UCE family includes several capacities and model variations. Strong application support exists for UCE 350/500 service use and Continental GT 535 oil-pump diagrams, but the exact motorcycle parts catalogue should still be checked before opening an engine.

What This Product Is

• Genuine Royal Enfield oil-pump drive pinion.
• Current replacement SKU: 572642/D.
• Supersession path includes 572642/A and 571166/B where those older references are specified.
• Small internal engine drive gear used with the oil-pump system.

What This Product Is Not

• Not the complete oil pump sub-assembly; 572641/A is a separate oil-pump assembly reference.
• Not a cam gear or crankshaft gear.
• Not a J-Series 350 oil-pump part by assumption.
• Not a Sherpa 450 or 650 Twin engine component.
• Do not install an aftermarket gear based only on tooth count/appearance without matching the exact part number.

Key Features

• Current /D revision for exact replacement ordering.
• Captures old-part searches for 572642/A and 571166/B.
• Common buyer terms include oil pump gear, pump-drive pinion and oil-pump garari.
• Critical lubrication-system part: exact fit is more important than visual similarity.

Buyer Search Names / Internal Search Keywords

Royal Enfield, Genuine Royal Enfield Parts, 572642/D, 572642D, 572642, 572642/A, 571166/B, Pump Drive Pinion, Oil Pump Drive Pinion, Oil Pump Gear, UCE Oil Pump, UCE 350, UCE 500, Continental GT 535

Confirmed / Best-Supported Compatibility

Fitment Not Confirmed / Check Before Ordering

Not Compatible / Do Not Order For

• Classic 350 Reborn / Bullet 350 J-Series / Meteor / Hunter by assumption
• Himalayan 450 / Guerrilla 450
• Interceptor 650 / Continental GT 650 / Super Meteor 650
• Any non-UCE engine without exact EPC match

Part Number / Supersession Notes

572642/A (Pump Drive Pinion) is shown with replacement 572642/D. Older 571166/B (Pump Drive Pinion) is also shown replaced by 572642/D. Shopify SKU and MPN should therefore be 572642/D.

Similar Parts Comparison

When Should This Be Replaced?

Replace if inspection reveals stripped or chipped teeth, abnormal wear, damaged engagement surfaces, cracking, or if the engine overhaul calls for the superseded pump-drive pinion. Low oil pressure must be diagnosed as a system fault; do not assume the gear is the only possible cause.

Recommended Related Parts to Check

Inspect the oil pump sub-assembly, pump gasket, circlips/retainers, pump drive mating components, oil passages and signs of debris or oil starvation. A damaged pump system must be cleaned and diagnosed before fitting a new drive pinion.

What's in the Box?

1 × Genuine Royal Enfield Pump Drive Pinion – 572642/D.

Installation Notes

Internal lubrication-system work should be carried out by a competent engine technician. Confirm the superseded old number, install in the correct orientation, verify free rotation/engagement and prime/check the lubrication system before normal engine operation.

Return-Prevention Note

Please confirm 572642/D before ordering. Match the part number, motorcycle model/generation, year/variant, side/colour/connector or engine specification as applicable. Correctly supplied spare parts are not returnable, exchangeable or refundable for wrong selection, incorrect diagnosis, fitment mismatch, mechanic recommendation or change of mind. Orders are non-cancellable once placed. For eligible wrong/damaged/missing-item claims, keep the complete parcel and provide a full unboxing video within 24 hours as required by store policy.

Frequently Asked Questions

What replaces 572642/A?
The current replacement shown in the parts system is 572642/D.

What replaces 571166/B?
571166/B is also shown replaced by 572642/D.

Is this the complete oil pump?
No. It is the pump drive pinion/gear only.

Does it fit UCE 350 and UCE 500?
It is widely used in UCE-family oil-pump applications, but exact EPC or old-part confirmation is still required.

Is Continental GT 535 supported?
Yes, the earlier 572642/A reference is shown in GT 535 oil-pump diagrams; use the current superseding reference where applicable.

Can I use it on the new J-Series Classic 350?
Do not assume so. J-Series is a different engine family.

SEO Tags

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Google Shopping Notes

• Brand: Royal Enfield
• MPN: 572642/D
• Condition: New
• Product category: Vehicles & Parts > Vehicle Parts & Accessories > Motor Vehicle Parts
• Custom product: False