Royal Enfield Genuine Cam Chain Tensioner Bolt Washer 6 × 18 × 1 mm – 574022/B

Replace a missing, distorted or damaged internal tensioner-bolt washer with the correct genuine Royal Enfield component. The complete current manufacturer part number is 574022/B; parts diagrams may display the base reference 574022.

The detailed application description is washer 6 × 18 × 1 mm for the cam-chain tensioner bolt. Some Royal Enfield price lists and package records shorten its name to WASHER M22 or washer M6. These are catalogue descriptions for part 574022/B—not permission to substitute a generic washer selected only by name or appearance.

Critical ordering warning: This listing contains one washer only. It does not include the stepped tensioner bolt, cam-chain tensioner, tensioner blade or pad, tensioner gasket, cam chain, hydraulic-tensioner sealing washer, drain-plug washer or any complete engine kit.

What This Product Is

• Genuine Royal Enfield internal engine washer
• Exact current part number: 574022/B
• Base catalogue and search reference: 574022
• Detailed size description: 6 × 18 × 1 mm
• Used with the specified stepped bolt in compatible cam-chain tensioner arrangements
• Also reused at another internal tensioner-bolt position in certain LS410 gearbox diagrams
• Quantity supplied in this listing: 1 washer

What This Product Is Not

• Not stepped cam-chain tensioner bolt 574023/C
• Not the automatic or hydraulic cam-chain tensioner assembly
• Not a cam-chain guide, blade or tensioner pad
• Not Himalayan 450 hydraulic-tensioner sealing washer RLG00046
• Not oil-gallery washer 574020/B
• Not copper engine-oil drain-plug washer 144846
• Not an M22 drain-plug washer or generic 22 mm washer
• Not oil-strainer cover O-ring 1570012/B
• Not a complete cam-chain repair kit

Key Features

• Exact Royal Enfield OEM-number identification for an easily confused small engine part
• Catalogue-specified 6 × 18 × 1 mm format
• Used at the defined internal tensioner-bolt location
• Shared across multiple confirmed Royal Enfield single-cylinder engine families
• Suitable for correct replacement during applicable engine or cam-chain service
• Supplied individually so the workshop can order the required quantity

Confirmed Product Details

The number of 574022/B washers used can vary by motorcycle and internal service position. Some LS410 catalogues show this washer in both cam-chain and gearbox-related tensioner-bolt locations. Order the quantity required by the exact exploded diagram or workshop job.

No unverified material, finish or hardness specification is claimed. Match the complete part number and catalogue position rather than selecting an unverified washer by visual measurement alone.

Confirmed Compatibility

Model years are catalogue guides and may differ by country or registration date. Confirm the full part number and exact exploded-diagram position for the motorcycle being repaired.

Fitment Not Confirmed—Check Before Ordering

• Scram 440: do not assume LS410/Scram 411 hardware carries over to the newer 440 engine.
• Any regional model, prototype, modified engine or engine-swapped motorcycle not explicitly listed above.
• Any job where the removed washer has a different part number, dimensions or catalogue position.

Not Compatible / Do Not Order For

• Classic 350 UCE, Classic 500 UCE, Bullet 350 UCE or Bullet 500 UCE unless an exact model-specific catalogue independently specifies 574022/B
• Thunderbird or Thunderbird X UCE models
• Continental GT 535
• Interceptor 650, Continental GT 650, Super Meteor 650, Shotgun 650, Bear 650 or Classic 650
• Engine-oil drain plug, oil-filter cap, oil-gallery bolt or oil-strainer cover
• The hydraulic-tensioner sealing position that requires RLG00046
• Any application selected only because the words “M22 washer” appear on a search result

Similar Parts and Common Confusions

What This Washer Does

The washer is fitted with the specified internal stepped bolt in the cam-chain tensioner arrangement. It provides the catalogue-defined interface beneath or around the fastener at that position. Installing the wrong thickness, outside diameter or internal diameter can affect component seating, clearance or movement.

Because this is an internal timing-system component, do not substitute a random hardware-store washer even if it appears similar. Use the exact Royal Enfield part number required by the engine diagram.

What You Will Receive

1 × Genuine Royal Enfield cam-chain tensioner bolt washer – 574022/B

The stepped bolt, tensioner assembly, tensioner pad or blade, gasket, cam chain, sprockets, drain-plug washer, engine oil, tools and labour are not included.

When Should It Be Replaced?

• The original washer is missing during engine assembly
• It is bent, distorted, cracked, scored or excessively worn
• The washer was damaged during removal
• Its bore or seating faces no longer match the serviceable original condition
• The engine was assembled previously with an incorrect generic washer
• The workshop manual or engine-repair procedure calls for replacement

Inspection and Diagnostic Note

Cam-chain noise or timing problems should not be diagnosed from this washer alone. Inspect the chain, sprocket, guides, blade or pad, tensioner mechanism, stepped bolt, mounting points, lubrication and valve timing as required by the workshop manual. Replacing 574022/B cannot correct a failed tensioner, stretched chain, damaged guide or incorrect timing.

Before opening the package, compare the required diagram position, complete part number and quantity. On LS410 engines the same washer number can be shown at more than one internal bolt position, so confirm which position or positions are being serviced.

Installation Notes

• This is an internal engine and timing-system component; professional installation is strongly recommended.
• Use the model-specific Royal Enfield workshop manual and exact exploded diagram.
• Secure the motorcycle, disconnect power where required and work only on a safely cooled engine.
• Set and retain the correct engine timing before disturbing cam-chain components.
• Confirm the old washer, new 574022/B washer and associated stepped bolt before assembly.
• Inspect the bolt, tensioner component and seating surfaces for wear or damage.
• Install the washer in the exact orientation and position shown in the workshop information.
• Use only the specified tightening torque and locking procedure; no torque value is guessed in this listing.
• Rotate and verify the engine mechanically as required before starting it.
• Confirm normal tensioner operation and absence of abnormal timing noise before returning the motorcycle to service.

Important Return-Prevention Check

Before opening the package, confirm all of the following:

• The required complete part number is 574022/B or base reference 574022
• The required part is the 6 × 18 × 1 mm internal tensioner-bolt washer
• You do not require stepped bolt 574023/C, sealing washer RLG00046 or drain washer 144846
• Your motorcycle and engine family are included in the confirmed table
• The workshop has checked the required quantity for every service position
• You understand that only one washer is supplied

We do not offer exchanges. A correctly supplied part is not returnable or refundable after opening, installation, testing, use, contamination, marking, bending or damage. Ordering 574022/B for the wrong engine or washer location does not make the supplied part incorrect. Record a continuous unboxing video from the sealed parcel through inspection, and report any wrong, missing or transit-damaged item within 24 hours with the required proof.

Frequently Asked Questions

What is Royal Enfield part 574022/B?

It is a genuine 6 × 18 × 1 mm internal washer used with the specified cam-chain tensioner stepped bolt on compatible Royal Enfield engines.

Is 574022 the same base reference?

Yes. Exploded diagrams often show 574022, while the complete current manufacturer number is 574022/B.

Why is it sometimes called WASHER M22?

WASHER M22 is a short description found in some Royal Enfield price and parts records. Use the exact part number; do not interpret it as a universal 22 mm washer.

What are the catalogue dimensions?

The detailed parts-book description specifies 6 × 18 × 1 mm.

How many washers are included?

One 574022/B washer is supplied.

Does every compatible motorcycle require only one?

Not necessarily. The quantity depends on the engine and service position. Certain LS410 catalogues show the same washer number in more than one internal location.

Does it fit the Himalayan 411?

Yes. It is listed for Himalayan 410/411 LS410 cam-chain and applicable internal tensioner-bolt positions.

Does it fit the Scram 411?

Yes. The Scram 411 LS410 parts catalogue lists 574022 at the internal tensioner-bolt position.

Does it fit Meteor, Classic Reborn, Hunter and the new Bullet 350?

Yes. Their applicable J-Series 350 crankcase catalogues list 574022 for the cam-chain tensioner stepped bolt.

Does it fit the Goan Classic 350?

Yes. It is included in the confirmed J-Series 350 crankcase application.

Does it fit the Himalayan 450?

Yes. The Sherpa 450 cam-chain catalogue lists 574022 at the stepped-bolt washer position.

Does it fit the Guerrilla 450?

Yes. The Guerrilla 450 cam-chain parts listing specifies 574022/B as the M6 washer.

Does it fit the Scram 440?

Fitment is not confirmed here. Do not assume that the newer Scram 440 uses every LS410/Scram 411 internal engine part.

Is bolt 574023/C included?

No. The stepped bolt is sold separately.

Is this the Himalayan 450 hydraulic-tensioner sealing washer?

No. The separate hydraulic-tensioner sealing position uses RLG00046.

Can this be used as an engine-oil drain-plug washer?

No. It is not the drain-plug sealing washer.

Can I use a generic washer of similar size?

Visual similarity does not confirm thickness, tolerances or suitability for the internal moving assembly. Use the exact specified part number.

Can I install it myself?

Only a person experienced with the specific engine and timing procedure should perform this work. Professional workshop installation is strongly recommended.

Buy Royal Enfield 574022/B Tensioner Washer Online

Order genuine Royal Enfield cam-chain tensioner bolt washer 574022/B from Under The Hood. Shipping is available across India and to international destinations. Confirm the engine family, exact internal position and required quantity before ordering.

Buyer Search Terms

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