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Details
| Specification | Value |
|---|---|
| Brand | HENGST FILTER |
| MPN | e728l |
| Category | Air cleaner |
| Length [mm] | 273 mm |
| Width [mm] | 312 mm |
| Height [mm] | 42 mm |
OE/OEM numbers (3)
Search by this OE number to find compatible parts
- BMW—13 71 7 521 023
- BMW—13 71 7 521 037
- BMW—13 71 7 521 037-01
Where this part fits
Original-fit position for OE 13717521023. The red ring marks where this part installs on the vehicle.
About this product
Sourced from HENGST FILTER, this air cleaner (E728L) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Length [mm]: 273 mm, Width [mm]: 312 mm, Height [mm]: 42 mm, Filter type: Stainless Steel — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit ALPINA, BMW, BMW (BRILLIANCE) models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 12-0776, 13 71 7 521 023, 13 71 7 521 037, 13 71 7 521 037-01 and 21 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HENGST FILTER is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
Equivalent products (22)
Show all 22 OE numbers
Air cleaner HENGST FILTER E728L — compatible car models
| Car models | ALPINA: B5 (E60), B5 Estate (E61); BMW: 5 (E60), 5 Touring (E61), 6 Convertible (E64), 6 (E63); BMW (BRILLIANCE): 5 SERIES (E60) |
|---|---|
| Engines | 4.4; 520 i; 645 Ci; 520 Li |
| Year of manufacture | 2001-2010 |
| Manufacturer article number (MPN) | E728L |
| OE part numbers | 13 71 7 521 023, 13 71 7 521 037, 13 71 7 521 037-01 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HENGST FILTER e728l Air cleaner. Filter type: 9. Height [mm]: 42 mm. Length [mm]: 273 mm. Width [mm]: 312 mm
- 1x Air cleaner
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Air cleaner compatible with my car?
This Air cleaner fits ALPINA, BMW, BMW (BRILLIANCE) vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this HENGST FILTER Air cleaner have?
This HENGST FILTER Air cleaner has the following specifications: Length [mm]: 273 mm; Width [mm]: 312 mm; Height [mm]: 42 mm; Filter type: 9. Check the full specifications table above for complete details.
What OE part numbers does this Air cleaner replace?
This Air cleaner replaces OE part numbers: 13 71 7 521 023, 13 71 7 521 037, 13 71 7 521 037-01. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Air cleaner cost?
This HENGST FILTER Air cleaner is available for £20.99. Air cleaner prices vary depending on brand, specifications, and vehicle compatibility. HENGST FILTER parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Air cleaner?
A dirty air filter can cause reduced fuel economy, engine misfires, unusual engine sounds, or reduced horsepower. Most manufacturers recommend replacement every 15,000-30,000 miles, or more frequently in dusty conditions.
What tools do I need to replace a Air cleaner?
Tools needed: none for most vehicles (airbox clips open by hand); some require a flat-head screwdriver or T20 Torx. Difficulty: Easy DIY. Safety warning: Ensure the airbox is fully sealed after fitting -- an air leak downstream of the mass airflow sensor will cause running problems and potential fuel mixture faults.
Can I use this part as a replacement for OE 13 71 7 521 023?
Yes, this HENGST FILTER Air cleaner is a direct replacement for OE part number 13 71 7 521 023. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
