Royal Enfield UCE 500 & Continental GT 535 Cylinder Base Gasket – 571043

Replace the seal between the cylinder barrel and crankcase on an applicable Royal Enfield UCE 500 EFI or Continental GT 535 engine with this cylinder base gasket. Listing SKU: 571043. The current Royal Enfield catalogue revision is 571043/C; earlier 571043/B is shown as replaced by 571043/C.

This is also called the cylinder barrel-to-crankcase gasket, barrel base gasket or cylinder foot gasket. It seals the lower face of the cylinder barrel where the barrel mounts to the crankcase.

Critical fitment warning: This is not the cylinder-head gasket. Royal Enfield cylinder-head gasket 571039/B seals the joint above the barrel, between the cylinder barrel and cylinder head. Confirm where the engine is leaking and match the required part number before opening the package.

What This Product Is

• Royal Enfield cylinder barrel-to-crankcase base gasket
• Listing and searchable base part number: 571043
• Current catalogue revision: 571043/C
• Earlier reference: 571043/B, replaced by 571043/C
• Application: applicable 500cc UCE EFI and 535cc UCE single-cylinder engines
• Quantity supplied: one cylinder base gasket

What This Product Is Not

• Not cylinder-head gasket 571039/B
• Not a rocker-cover gasket
• Not a complete engine gasket set
• Not a crankcase-half gasket or crankcase sealant
• Not an exhaust, inlet-manifold or throttle-body gasket
• Not supplied with the cylinder barrel, piston, rings, head or fasteners
• Not for a UCE 350, J-Series 350, Himalayan, 450 or 650 Twin engine

Key Features

• Correct replacement for the barrel-to-crankcase sealing position
• Current 571043/C catalogue reference retained alongside base SKU 571043
• Catalogued for both Euro 3 and Euro 4 Continental GT 535 applications
• Catalogued for relevant Bullet 500, Bullet Trials 500 and Classic 500 applications
• Suitable for a correct engine rebuild or cylinder-barrel refit when the model specifies this part
• Single-gasket supply avoids confusion with unrelated head and rocker-cover gaskets

Confirmed Product Details

Direct Catalogue Compatibility

Additional 500 EFI Cross-Reference

Royal Enfield parts specialists also cross-list 571043/C for the Thunderbird 500. Because model-market catalogues can differ, Thunderbird owners should match the old gasket reference or confirm 571043/C in the motorcycle-specific parts book before opening the package. Do not assume Thunderbird 350 compatibility.

Do Not Order For

• Classic 350 UCE, Bullet 350 UCE, Electra 350 UCE or Thunderbird 350
• Classic 350 Reborn, Meteor 350, Hunter 350, current Bullet 350 or Goan Classic 350 J-Series engines
• Himalayan 411, Scram 411, Himalayan 450 or Guerrilla 450
• Continental GT 650, Interceptor 650, Super Meteor 650, Shotgun 650, Bear 650 or Classic 650
• Older cast-iron Bullet, AVL / Lean Burn or other non-UCE engine families
• Any modified engine using a non-standard barrel, crankcase or big-bore conversion that specifies a different gasket

Base Gasket vs Head Gasket

These two gaskets are not interchangeable. Identify the actual leak line before ordering. Oil can travel across the outside of the engine and make the leak appear to come from a lower joint.

Closely Related Parts—Sold Separately

What the Cylinder Base Gasket Does

The gasket seals the stationary joint where the cylinder barrel seats on the crankcase. Correct sealing helps contain engine oil and prevents seepage from the cylinder-base joint. It also forms part of the assembled barrel height, so the correct gasket must be used rather than improvised gasket material.

A new gasket cannot compensate for a warped barrel base, damaged crankcase surface, loose or stretched fasteners, pulled threads, incorrect assembly or a leak originating elsewhere.

What You Will Receive

1 × Royal Enfield cylinder barrel-to-crankcase base gasket – listing SKU 571043 / current reference 571043/C

No cylinder-head gasket, rocker-cover gasket, piston, rings, barrel, head, studs, nuts, sealant, oil, filter, tools or labour is included.

When Should It Be Replaced?

• The cylinder barrel has been removed and the original base gasket has been disturbed
• Oil seepage is positively traced to the barrel-to-crankcase joint
• The existing gasket is torn, compressed unevenly or damaged during disassembly
• The engine is being rebuilt and the model-specific procedure requires a new base gasket

Diagnostic Note

Clean the engine and confirm the highest point at which fresh oil appears. Oil from the cylinder-head joint, rocker covers, pushrod/tappet area, breather, oil line or another upper source can run downward and imitate a failed base gasket. Compression loss or combustion leakage more commonly points to the cylinder-head gasket or another engine fault, not automatically to this base gasket.

Installation Notes

• This repair requires cylinder-head and cylinder-barrel disassembly; professional engine installation is strongly recommended.
• Work on a completely cool, clean engine and follow the exact model workshop manual.
• Confirm the replacement part number before opening or contaminating the gasket.
• Remove all old gasket material without scratching or gouging the aluminium sealing faces.
• Check the barrel base and crankcase deck for damage, corrosion, distortion and pulled threads.
• Inspect cylinder studs, dowels, piston, rings and bore while the barrel is removed.
• Use sealant only if, and exactly where, the model-specific workshop instruction specifies it.
• Do not quote or reuse a generic torque value; tighten fasteners in the specified sequence and to the exact workshop-manual values.
• Reassemble valve-train components, timing-related parts and ancillary gaskets exactly as specified.
• Refill with the correct oil, rotate the engine safely, verify operation and check carefully for leaks before road use.

Important Return-Prevention Check

Before opening the package, confirm all of the following:

• You require the cylinder barrel-to-crankcase gasket, not the cylinder-head gasket
• Your exact motorcycle parts book specifies 571043, 571043/B or current 571043/C
• The engine is the applicable UCE 500 EFI or Continental GT 535 type
• The motorcycle is not a 350, 411, 450, 650 Twin, cast-iron or AVL application
• The sealing faces and fasteners have been inspected so the gasket is not being used to mask another defect

We do not offer exchanges. A correctly supplied gasket is not returnable or refundable after delivery, opening, oil contamination, installation, compression, testing or use. Wrong engine selection, confusing the base gasket with the head gasket, or an incorrect leak diagnosis does not make the supplied part incorrect. Record a complete unboxing video and report any wrong, missing or transit-damaged item within 24 hours with the required proof.

Frequently Asked Questions

What is Royal Enfield part 571043?

It is the cylinder barrel-to-crankcase base gasket for applicable Royal Enfield UCE 500 EFI and Continental GT 535 engines.

What is the current revision of 571043?

The current catalogue reference is 571043/C. An official parts-price page shows 571043/B as replaced by 571043/C.

Is this the cylinder-head gasket?

No. This gasket fits below the cylinder barrel at the crankcase. Cylinder-head gasket 571039/B fits above the barrel between the barrel and cylinder head.

Does it fit the Royal Enfield Bullet 500?

Yes, direct parts assignments list 571043/C for Bullet 500 Euro 3 and Euro 4 cylinder-barrel applications.

Does it fit the Bullet Trials 500?

Yes. The Bullet Trials 500 Euro 4 parts catalogue specifies 571043/C in the piston-and-cylinder-barrel assembly.

Does it fit the Classic 500?

Yes, for the listed Classic 500 EFI/UCE Euro 3, Euro 4 and specified special-edition applications that call for 571043/C.

Does it fit the Continental GT 535?

Yes. Direct catalog assignments list the gasket for both Euro 3 and Euro 4 Continental GT 535 models.

Does it fit the Thunderbird 500?

Specialist Royal Enfield parts listings cross-reference 571043/C to Thunderbird 500. Match the old part number or model-specific parts book before opening because market versions can differ.

Does it fit a Royal Enfield 350?

No. Do not order it for a UCE 350 or a newer J-Series 350. Engine-family names and external appearance are not sufficient for gasket selection.

Can the old base gasket be reused?

Reuse is not recommended once the gasket has been disturbed or compressed. Follow the model workshop procedure and fit the correct new gasket during barrel reassembly.

Will this gasket stop every oil leak near the cylinder?

No. First trace the highest point of fresh oil. Rocker-cover, head-gasket, breather, oil-line and other leaks can run down to the cylinder base.

Is sealant required?

Use sealant only if the exact workshop manual specifies it, and only in the stated locations and quantity. Excess or unsuitable sealant can create new engine problems.

Is professional installation recommended?

Yes. The repair involves removal and correct refitting of the cylinder head and barrel, inspection of sealing faces and accurate model-specific tightening procedures.

Buy Royal Enfield 571043 Cylinder Base Gasket Online

Order the Royal Enfield UCE 500 and Continental GT 535 cylinder barrel-to-crankcase gasket from Under The Hood. Shipping is available across India and to international destinations. Confirm the exact part number, engine family and gasket position before ordering.

Buyer Search Terms

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