Unobtainium BMW E90 335d DPF/SCR Pipes
or as low as $72.61/mo with Affirm
DPF / SCR Pipes
Eliminate costly diesel emissions maintenance and unlock real top-end on the M57N2. Hand-built in Canada from 304/316 stainless — the largest-bore DPF downpipe on the market for the E90 platform, with a weld-in SCR mid-pipe to round out a complete back-half rebuild.
Largest DPF Downpipe Available
Maximum bore replaces the restrictive factory diesel particulate housing. Wakes up turbo response and clears the path for higher-flow tunes that the stock M57N2 exhaust will choke on.
Weld-In SCR Mid-Pipe
Replaces the failure-prone selective catalytic reduction section that becomes a maintenance liability past 100k miles. Smooth-bore stainless eliminates the urea injection complexity entirely.
304 / 316 Stainless Construction
Aerospace-grade alloys throughout. 304 main body, 316 in high-corrosion zones. TIG-welded transitions on full back-purge so the inside surface is as clean as the outside.
Built To Outlast The Car
Unobtainium handcrafts every section in-house in Canada — no offshore mass production, no thin-gauge shortcuts. Same shop that supplies titanium and Inconel exhaust to exotic platforms.
Choose Your Configuration
Pick the section you need or run the complete back-half upgrade in one go.
Downpipe Section
The largest-bore DPF replacement on the market for the E90 335d. Bolts in to factory turbo flange, mates to OE SCR section if you’re keeping the urea system intact.
Mid-Pipe Section
Weld-in SCR delete pipe for cars retaining the factory DPF housing. Eliminates the urea injection failure path while keeping the existing downpipe in place.
Complete Back-Half
DPF downpipe + SCR mid-pipe shipped together. The full M57N2 emissions-section rebuild — one part number, one shipment, one weekend on the lift.
This is a competition-only product intended for closed-course / off-road use on vehicles where applicable laws permit. Removing OEM emissions equipment may not be legal for street operation in your jurisdiction — verify local regulations before installation. FFP supplies the hardware; compliance is the buyer's responsibility.
Specifications
Hardware details for the planning stage.
- Vehicle Fitment
- 2009-2011 BMW 335d (E90 sedan, M57N2 3.0L turbodiesel)
- DPF Section
- Largest-bore replacement available for E90 335d
- SCR Section
- Weld-in stainless mid-pipe, urea delete
- Material
- 304 stainless main body, 316 in high-corrosion zones
- Welding
- TIG-welded, back-purged stainless joints
- Manufacturing
- Handcrafted in Canada by Unobtainium
- Application
- Off-road / competition use
- Warranty
- Manufacturer defect coverage via Unobtainium
FFP is an authorized Unobtainium dealer. Every order ships direct from the manufacturer's Canadian facility with full factory warranty intact. Have a fitment question or need a custom configuration? Use the expert contact card above — we get answers from Unobtainium directly, not from a phone tree.
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