Air filter fitting
BMW X5 E70 N57 air filter fitting guide
A written fitting guide for the TTRP Racing BMW X5 E70 N57D30A air filter, OE reference 13717811026. Check the part, replace the element and inspect the seal.
Read the guide ↗TTRP / GUIDES & ADVICE
Know the part.
Find the fit.
Straightforward advice on bulb fittings, filter references and intake sizing. Start with the details that matter before you order.
Turbo & performance
Blow-off valve vs dump valve: are they the same thing?
Blow-off valve, dump valve or diverter valve? Understand the terminology, atmospheric and recirculating designs, and what to check before buying.
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Lighting care
When should you replace xenon headlight bulbs?
A practical guide to checking ageing HID xenon headlights, replacing bulbs in pairs and choosing the correct D1S or D3S fitting.
Read the guide ↗Lighting
D1S vs D3S xenon bulbs: how to choose the right replacement
Compare D1S and D3S HID bulb fittings, understand why they are not interchangeable and check your original bulb before ordering.
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BMW fitment
BMW X5 E70 air filters: M57 vs N57 and the OE number to check
Find the right BMW X5 E70 3.0d air filter by engine and OE reference. Understand why 13712247444 and 13717811026 are different applications.
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Intake & filters
Universal cone air filters: choosing a 3, 3.5 or 4-inch connection
Measure your intake pipe, choose a reducer and check engine-bay clearance before ordering a TTRP universal cone air filter.
Read the guide ↗Lighting
Halogen, xenon HID and LED headlights: choose for your existing system
Compare halogen, xenon HID and LED headlight systems, including D1S HID versus D1S LED, and check the fitting before choosing replacement bulbs.
Read the guide ↗Still unsure which part you need?
Send your vehicle details and the original bulb code or filter reference. We’ll help you check the product details.