MAHLE OX 1250 Oil Filter for Royal Enfield Classic, Bullet, Electra & Thunderbird UCE

MAHLE OX 1250 Engine Oil Filter Element – Royal Enfield UCE Models

Looking for a replacement oil filter for an older Royal Enfield UCE (Unit Construction Engine) motorcycle? The MAHLE OX 1250 is a cartridge-type engine oil filter for the specified Royal Enfield UCE applications below. It is a MAHLE-branded aftermarket filter—not a Royal Enfield Genuine Parts-branded item.

The actual filter features a cylindrical cartridge with a perforated metal outer sleeve and an internal filter medium. The photographed pack also contains two black sealing O-rings for the relevant oil-filter housing arrangement.

Fitment rule: UCE engines only. This listing does not offer compatibility for older cast-iron (CI), AVL/Lean Burn or newer J-series engines, even if their motorcycles share a familiar model name.

Product Highlights

• Brand: MAHLE / MAHLE ANAND
• Product code: OX 1250 (OX1250)
• Filter style: Replaceable cartridge-type engine oil filter element (not a spin-on filter)
• Appearance: Perforated metal protective sleeve, internal filter medium and centre bore
• Application: Select Royal Enfield 350 cc / 500 cc UCE motorcycles identified below
• Photographed pack: 1 oil filter element and 2 sealing O-rings
• Manufacturer stated on pack: MAHLE ANAND Filter Systems Private Limited
• Country of origin: India

Royal Enfield UCE Fitment Guide

Confirm the engine generation and compare the existing oil-filter element before ordering. Model name by itself is not proof of fitment.

UCE 350/500 is the primary application. GT 535 and special variants should be checked against their original filter reference before ordering.

Not Suitable For

• Any AVL / Lean Burn application, including older Machismo, Electra X or early Thunderbird variants (not offered as compatible in this listing).
• Older cast-iron (CI) Bullet / Standard / Electra motorcycles that use a different oil filter.
• J-series Classic 350 Reborn, Hunter 350, Meteor 350 and current/new Bullet 350.
• Himalayan 411 / Scram 411, Himalayan 450 or Guerrilla 450.
• Interceptor 650, Continental GT 650, Super Meteor 650, Shotgun 650, Classic 650 and other 650 twin-cylinder Royal Enfields.
• Any Royal Enfield whose removed cartridge does not match this filter's shape and fitment reference.

Part Number and Reference Identification

The Royal Enfield references are provided only to help identify the correct UCE filter application. They are not MAHLE part numbers, do not establish blanket compatibility with every motorcycle that has ever used a similar reference, and do not make this a Royal Enfield Genuine Parts product.

What You Receive

• 1 × MAHLE OX 1250 cartridge oil filter
• 2 × black sealing O-rings as shown in the actual product photos

The set does not include engine oil, filter-cover bolts, springs, additional gaskets or engine-housing hardware. Fit the O-rings required by your UCE housing; do not assume that every bike uses both rings in identical positions.

Why Change the Oil Filter?

During engine operation, the oil filter helps retain suspended contaminants from the circulating engine oil. An appropriately fitted, serviceable filter is part of routine lubrication-system maintenance. Replace the cartridge at the interval prescribed in the service manual for your motorcycle, rather than using a generic mileage figure.

How to Identify the Correct Filter Before Ordering

1. Confirm that your motorcycle has a UCE engine, not CI, AVL or J-series.
2. Check the removed oil filter or service parts catalogue for the 500613/B / 888414 application.
3. Compare the cartridge's length, outer profile, central bore and end-cap construction with the actual photographs.
4. If there is a mismatch, confirm with your mechanic or request a part-number check before purchasing.

Installation Notes

1. Follow the Royal Enfield service manual for your exact UCE engine and allow the engine/oil to cool as instructed.
2. Remove the oil-filter housing cover and used cartridge, retaining the original spring or housing parts that are meant to be reused.
3. Clean and inspect the housing, sealing surfaces and filter cap.
4. Install the replacement element in the specified orientation and replace applicable O-rings without twisting or pinching them.
5. Refit the cover with the manufacturer-specified tightening torque, refill/check the correct engine oil and inspect for leakage after the service.

Installation is recommended by a qualified motorcycle mechanic if you are not familiar with the UCE oil-filter housing.

Frequently Asked Questions

Q1. Will it fit the old Royal Enfield Classic 350?
Yes, the earlier Classic 350 with a UCE engine and matching cartridge. It is not for the Classic 350 Reborn (J-series).

Q2. Will it fit Classic 500 EFI?
Yes, for Classic 500 UCE applications using the corresponding cartridge filter.

Q3. Does it fit Bullet Standard 350?
Only a Bullet/Standard 350 with the UCE engine and matching filter. The older cast-iron Bullet and the newer J-series Bullet use different applications.

Q4. Will it fit a Bullet Electra 350?
Yes, if it is the UCE-generation Electra 350. Older Electra models with a different engine design are excluded.

Q5. Will it fit Thunderbird 350 or Thunderbird 500?
Yes, the UCE generations using the matching filter cartridge. Check the existing element on older or modified motorcycles.

Q6. Does it fit Thunderbird X?
It is intended for the UCE Thunderbird X applications using the corresponding filter; confirm your existing cartridge.

Q7. Does it fit AVL or Machismo?
No AVL or Machismo fitment is offered for this product. This listing is restricted to UCE applications.

Q8. Is it suitable for the new Classic 350 Reborn, Hunter 350 or Meteor 350?
No. They use a different J-series oil-filter application.

Q9. Is it compatible with Continental GT 535?
The original single-cylinder UCE GT 535 uses a 888414-type filter application; verify the old cartridge before purchase. It does not fit the Continental GT 650.

Q10. Are the O-rings supplied with this filter?
Yes. The photographed MAHLE pack contains one filter cartridge and two black sealing O-rings.

Q11. Is this a genuine Royal Enfield oil filter?
No. It is a MAHLE-branded aftermarket replacement, not Royal Enfield Genuine Parts packaging.

Q12. How often should I replace it?
Follow the oil-filter replacement interval in the owner's or service manual for your specific UCE engine.

Related Maintenance Items

• Royal Enfield UCE engine oil of the prescribed specification
• Original Royal Enfield 888414 UCE oil filter service kit (sold separately)
• UCE oil-filter cover seals / relevant service gaskets (verify engine-specific references)
• Other UCE engine service and oil-change consumables

Final purchase check: This listing is for the MAHLE OX 1250 oil filter with two photographed O-rings, for verified UCE applications only. Check your engine generation and removed filter before ordering.