Milltek GPF/OPF Bypass for Mercedes A-Class A35 AMG 2.0 Turbo (Saloon/Sedan Only - OPF/GPF Models) (2019 onwards) – Filter Delete, Motorsport Use
This is Milltek's GPF/OPF bypass pipe for the Mercedes A-Class A35 AMG 2.0 Turbo (W177 Hatch Only OPF/GPF Models). It replaces the section of pipe housing the factory petrol particulate filter with a straight-through pipe, clearing the last major restriction left in a modern turbocharged petrol exhaust once a de-cat and remap are already in place. It's offered in versions to suit the factory or a Milltek system, so you can pick the setup that suits how the car's used.
It's aimed at owners already running a de-cat and a supporting remap who want to clear the final restriction in the system, not a bolt-on for a car that needs to stay road legal.
Because it removes the particulate filter, it's intended for off-road and competition use. A car with the GPF/OPF removed will fail an MOT emissions test and isn't legal to use on UK roads.
Specifications
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System Type: GPF/OPF Bypass
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Pipe Diameter: 76.2mm (3")
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EC Approved: No
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Race System: Yes
Key Features
- Made from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration
- Mandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow
- 76.2mm (3") pipework
- Straight-through pipe in place of the factory petrol particulate filter (off-road and competition use only)
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Mercedes A-Class A35 AMG 2.0 Turbo (Saloon/Sedan Only - OPF/GPF Models) (2019 onwards)
- Mercedes A-Class A35 AMG 2.0 Turbo (W177 Hatch Only OPF/GPF Models) (2019 onwards)
- Mercedes CLA-Class CLA35 AMG 2.0 Turbo Coupe & Shooting Brake (OPF/GPF Models) (2019 onwards)
Not suitable for: any model, engine or body style not listed above. Check your car before ordering.
Installation
Some versions: GPF/OPF Bypass - Fits Milltek Sport GPF/OPF Back System Only - Required Stage 2 ECU Remap. Some versions: GPF/OPF Bypass - Fits OE GPF/OPF Back System Only - Required Stage 2 ECU Remap. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.
Upgrade Further
Also available from Milltek for this car: Milltek Active Valve Control Mercedes A-Class A35 AMG 2.0 Turbo Saloon - OPF/GPF 19+, Milltek Large-bore Downpipe & Sports Cat Mercedes A-Class A35 AMG 2.0 Turbo Saloon Only - OPF/GPF 19+ SSXMZ151, Milltek Cat-back Exhaust Mercedes A-Class A35 AMG 2.0 Turbo Saloon - OPF/GPF 19+.
Will it fit the Mercedes A-Class A35 AMG 2.0 Turbo (W177 Hatch Only OPF/GPF Models)?
Yes. Milltek lists this part for the Mercedes A-Class A35 AMG 2.0 Turbo (W177 Hatch Only OPF/GPF Models) as well as the other models in the fitment list above.
Is it road legal?
No. Removing the particulate filter means the car will fail an MOT emissions test, so it is for off-road and competition use only.
Do I need a remap?
Yes. Milltek notes: "Stage 2 Remap Required". Without suitable software the engine management is likely to log faults.
Can I use it with my standard exhaust?
Yes. Milltek lists it for use with the factory (OE) exhaust system.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
Is there a warranty?
Yes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.
