Description
Product Description
Forge Alloy Charge Pipe for BMW N55 (RWD only)
M135i, M235i, 335i, [435i], M2 | Replaces OEM 13717604033
The factory plastic charge pipe is a known weak point on the N55. Heat cycling makes the coupler brittle, and in time it cracks and fails. When it goes, so does your boost. It’s one of the most common N55 problems we’re asked about.
Our replacement fixes it for good. The coupler and flanges are CNC-machined alloy, so there’s nothing to go brittle.
Fits (rear-wheel drive only)
- BMW M135i F20/F21 (2012-2016)
- BMW M235i F22/F23 (2014-2016)
- BMW 335i F30/F31 (2011-2015)
- [BMW 435i F32/F33/F36: confirm]
- BMW M2 F87 N55 (2015-2017). Not M2 Competition (S55).
Will not fit xDrive. On xDrive cars the steering rack sits where the pipe needs to go.



Why upgrade
- Alloy coupler and flanges won’t crack like the plastic original
- Quick-release CNC couplers make it easy to connect and disconnect
- Powder-coated hard pipes for a tough, long-lasting finish
- Built-in water/meth injection boss. Use it, or fit the supplied blanking plug
- Direct replacement for OEM part 13717604033
Before you fit
Keep your original O-rings and seals during removal — they're reused on the Forge hoses.
Check your vehicle compatibility: Click here
Please Note: In line with our policy to constantly review, revise, and improve our product range, the appearance of the product you receive may differ from the one advertised.
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Compatible Vehicles
Warranty
All Forge Motorsport products come with a limited lifetime warranty. All warranty claims must be accompanied by the original proof of purchase to enable us to help you. Failure to supply this proof will result in your claim or enquiry being denied.
For further information, please contact our customer service team.
Do not use aggressive (acidic) car cleaning products, particularly traffic film remover solutions or shampoos to clean your intercooler, radiator or oil cooler. The use of these products can damage Forge Motorsport cooling systems and invalidate your warranty. These are often found at car washes. A light, warm, soapy solution (free of harsh acidic cleaning compounds) should be used to clean you cooler and thoroughly rinsed away. We recommend that you should inspect your product on a regular basis for bent and/or crushed fins. Any bent fins should be carefully straightened to allow ambient air to pass through the core face. At the time of installing your Forge radiator, an approved coolant must be used and added to the coolant system. Be sure you never mix coolant and always use distilled water.
Shipping
Shipping
Shipping Charges & Services
We will contact you after your order is placed to advise of available shipping services and costs and to take payment from you.
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