Royal Enfield J-Series 350 Oil Strainer Cover Bolt M6 × 1 × 20 – 572011/B

SOLD AS A SET OF 40 PCS

Secure the engine-oil strainer cover correctly on compatible Royal Enfield J-Series 350 motorcycles with this genuine Royal Enfield mounting bolt. It is used with oil-strainer cover 1570011/D and cover O-ring 1570012/B. The complete current manufacturer part number is 572011/B; compatible exploded diagrams may show the base reference 572011.

The confirmed factory description is HEX FLANGE BOLT M6X1X20: M6 nominal thread diameter, 1.0 mm thread pitch and 20 mm nominal length. The flange is formed beneath the external hex head. This is model-specific OEM hardware, not a universal bolt merely because another fastener has the same basic dimensions.

Critical ordering warning: The J-Series 350 oil-strainer cover uses two 572011 bolts, but this listing supplies one bolt only. Order quantity 2 when replacing both cover bolts. The cover and O-ring are sold separately.

What This Product Is

• Genuine Royal Enfield hex-flange bolt
• Exact current part number / MPN: 572011/B
• Base catalogue and search reference: 572011
• Primary buyer application: mounting bolt for J-Series 350 oil-strainer cover 1570011/D
• Used with oil-strainer cover O-ring 1570012/B
• Metric thread: M6 × 1.0
• Nominal bolt length: 20 mm
• External hex head with integral flange
• Quantity supplied: 1 bolt

What This Product Is Not

• Not a generic hardware-store M6 × 20 bolt
• Not M6 × 20 hex-socket screw 570030
• Not M6 × 30 hex-flange bolt 572015/B
• Not M6 × 85 hex-flange bolt 572016/B
• Not M6 × 12 hex-socket screw 574018/B
• Not stepped cam-chain tensioner bolt 574023/C
• Not a nut, washer, stud or complete crankcase/airbox fastener kit
• Not oil-strainer cover 1570011/D
• Not oil-strainer cover O-ring 1570012/B

Key Features

• Exact OEM-number identification reduces wrong-length and wrong-head-form orders
• Correctly identified for the J-Series 350 oil-strainer cover mounting position
• Makes it easy to order the cover, O-ring and two mounting bolts as one service set
• Integral flange provides the catalogue-specified bearing face at the intended position
• Shared base reference across confirmed J-Series 350 and Himalayan 450 catalogue applications
• Supplied individually so the buyer can order the quantity required by the exact job
• Suitable for replacing the specified original bolt at a confirmed catalogue location

Confirmed Product Details

No unverified material, strength grade, coating, colour, head-across-flats measurement or thread-coverage claim is made for revision 572011/B. An older 572011/A catalogue description includes additional grade and finish detail, but that legacy specification is not automatically transferred to the current /B revision.

Confirmed Current Catalogue Applications

The listing supplies one bolt. Add quantity 2 to the order when both J-Series 350 oil-strainer cover bolts are required. The same base reference also appears in other assemblies, so the required quantity must always be checked for the exact job.

Model years are catalogue guides and can vary by market or registration date. Confirm the complete part number, VIN-specific parts book, exact assembly and quantity before opening the package.

Older /A Applications—Revision Check Required

Older catalogues assign 572011/A to several UCE and GT535 models, including Bullet 500, Bullet Trials 500, Classic 500 variants and Continental GT 535. The current /B page and the older /A page establish that both suffixes exist; they do not by themselves prove universal interchangeability.

• Order 572011/B for an older /A application only when the VIN-specific current catalogue, authorised dealer system, genuine package label or documented replacement mapping confirms /B as the replacement.
• Do not remove the suffix during stock control: 572011/A and 572011/B must remain distinguishable.
• Older Bullet 350 UCE, Classic 350 UCE and other UCE variants also require exact catalogue confirmation; seller fitment lists alone are insufficient.

Fitment Not Confirmed—Check Before Ordering

• Himalayan 411 and Scram 411
• Guerrilla 450 and Scram 440
• Interceptor 650, Continental GT 650, Super Meteor 650, Shotgun 650, Bear 650 and Classic 650
• Any older UCE or GT535 application whose diagram specifies 572011/A rather than 572011/B
• Any modified, engine-swapped, regional or VIN-specific motorcycle not shown in the confirmed table

This check list does not mean the bolt can never appear on those motorcycles. It means compatibility with the complete supplied number 572011/B has not been proven in this listing and must not be assumed from dimensions or model family alone.

Complete J-Series 350 Oil-Strainer Cover Setup

For a missing or damaged complete cover arrangement, order one 1570011/D cover, one 1570012/B O-ring and two 572011/B bolts. The engine-oil strainer itself and any internal strainer seal are separate parts.

Similar Parts and Common Confusions

Why Exact Fastener Matching Matters

Thread diameter and length alone do not establish suitability. Head form, flange geometry, strength grade, finish, thread engagement, clearance and the clamped components can all matter. A bolt that is too long can bottom out or contact internal parts; one that is too short may not provide adequate engagement. An incorrect head or flange can also affect seating and tool access.

Use 572011/B only at a position that specifies this exact current number or a confirmed replacement mapping. Never force a bolt that does not start cleanly by hand.

What You Will Receive

1 × Genuine Royal Enfield hex-flange bolt M6 × 1 × 20 – 572011/B

Oil-strainer cover 1570011/D, O-ring 1570012/B, the second mounting bolt, engine-oil strainer, nuts, washers, brackets, crankcase components, airbox parts, threadlocker, tools and installation labour are not included.

When Should It Be Replaced?

• The original bolt is missing
• One or both oil-strainer cover bolts are missing or damaged
• The hex head or flange is rounded, cracked, distorted or heavily corroded
• The threads are stretched, cross-threaded, flattened or otherwise damaged
• The bolt has been over-tightened or is suspected to have yielded
• The wrong length, head style or unknown generic fastener was previously installed
• The model-specific workshop procedure requires replacement

Installation Notes

• Use the VIN-specific Royal Enfield parts catalogue and workshop manual.
• Confirm M6 thread, 1.0 mm pitch, 20 mm nominal length, flange-head form and complete part number before installation.
• For J-Series 350 oil-strainer service, inspect cover 1570011/D, O-ring 1570012/B, both 572011/B bolts and the crankcase threads together.
• Compare the new bolt with the removed original before marking it or applying chemicals.
• Inspect and clean the female thread and mating surfaces without damaging them.
• Start the bolt by hand. Stop immediately if resistance suggests cross-threading or an incorrect fastener.
• Use threadlocker, lubricant or sealant only when the model-specific procedure calls for it.
• Tighten only to the torque and sequence specified for the exact installation point; this listing does not guess one universal torque.
• Internal engine or safety-relevant work should be completed by a qualified motorcycle technician.
• After assembly, complete all checks required by the workshop procedure before riding.

Important Return-Prevention Check

Before opening the package, confirm all of the following:

• The required complete current number is 572011/B, not only base 572011
• The required fastener is an M6 × 1.0 × 20 mm external hex-flange bolt
• The diagram position specifically calls for 572011/B or has a verified replacement mapping to it
• For the J-Series 350 oil-strainer cover, you have ordered two bolts if both mounting positions are being serviced
• You have separately ordered cover 1570011/D and O-ring 1570012/B if they are required
• You do not require legacy 572011/A or another similar M6 fastener
• The exact location and quantity have been checked
• You understand that this listing supplies one bolt only

We do not offer exchanges. A correctly supplied bolt is not returnable or refundable after opening, marking, threadlocker or lubricant application, installation, torqueing, testing, use, contamination or damage. Ordering 572011/B for the wrong model, suffix or bolt position 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 572011/B?

It is a genuine Royal Enfield external hex-head flange bolt with an M6 × 1.0 thread and 20 mm nominal length.

Is 572011 the same reference?

572011 is the base number shown in many exploded diagrams. The complete current sellable part number verified for this listing is 572011/B.

Is 572011/B the same as 572011/A?

Both suffixes exist, but universal interchangeability is not established here. For a diagram that specifies /A, obtain VIN-specific or authorised replacement confirmation before ordering /B.

How many bolts are included?

One genuine 572011/B bolt is supplied.

Do I need two or three bolts?

The J-Series 350 oil-strainer cover uses two bolts, so select quantity 2 when replacing both. The Himalayan 450 induction application uses three at its separate airbox position.

Is this the mounting bolt for oil-strainer cover 1570011/D?

Yes. On the confirmed J-Series 350 application, 572011/B is used to secure oil-strainer cover 1570011/D.

Is oil-strainer cover 1570011/D included?

No. The cover is sold separately.

Is oil-strainer cover O-ring 1570012/B included?

No. The sealing O-ring is sold separately and should be inspected whenever the cover is removed.

Does it fit the Meteor 350?

Yes, the applicable J-Series 350 crankcase catalogue shows base reference 572011. Confirm the exact position and current suffix before opening.

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

Yes, applicable J-Series 350 crankcase diagrams show base reference 572011 at the confirmed position.

Does it fit the Goan Classic 350?

Yes, the 2025-on J-Series Goan Classic 350 crankcase catalogue shows base reference 572011.

Does it fit the Himalayan 450?

Yes, the 2024-on Himalayan 450 induction and air-filter-box diagram shows base reference 572011.

Does it fit the Himalayan 411 or Scram 411?

Fitment with the complete 572011/B number is not confirmed in this listing. Check the VIN-specific catalogue rather than assuming compatibility.

Does it fit the Continental GT 535 or Classic 500?

Older catalogues show 572011/A on certain GT535 and UCE 500 applications. Order the current /B part only after confirming a documented /A-to-/B replacement for the exact motorcycle.

Is the bolt grade 10.9?

An older /A catalogue entry states grade 10.9, but no direct /B source reviewed states that specification. This listing therefore does not transfer the older grade claim to 572011/B.

Is a washer or nut included?

No. Only the single flange-head bolt is supplied.

Can I use a generic M6 × 20 bolt instead?

No substitute is recommended from dimensions alone. Match the exact part number, head and flange form, grade, finish and catalogue position.

What torque should I use?

Torque depends on the exact location and clamped components. Use the model- and position-specific workshop manual; no universal torque is guessed here.

Can I install it myself?

Only if you can identify the exact position, inspect the receiving thread and follow the correct torque procedure. Use a qualified technician for internal engine or safety-relevant work.

Buy Royal Enfield J-Series 350 Oil Strainer Cover Bolt Online

Order genuine Royal Enfield oil-strainer cover mounting bolt 572011/B from Under The Hood. For a complete J-Series 350 cover arrangement, check whether you also need cover 1570011/D, O-ring 1570012/B and a second 572011/B bolt. Shipping is available across India and to international destinations.

Buyer Search Terms

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