BMW N57 N47 EGR Delete

Why Does Your BMW N47 N57 Need an EGR Delete?

Intake Soot and Swirl-Flap Coking

The factory EGR feeds hot, particulate-laden exhaust back into the intake, and on the N47 and N57 that soot bakes onto the inlet ports and gums up the swirl flaps until they stick or shear. The longer the engine runs with active EGR, the more the carbon chokes the airflow and dulls the response. Deleting the EGR stops that oily soot from ever reaching the intake, so the ports and flaps stay clean across tens of thousands of miles.

EGR Cooler Leaks and Coolant Loss

The EGR cooler on these engines lives in a brutal heat cycle, and the internal core cracks on high-mileage cars, dumping coolant straight into the intake tract. The symptoms sneak up on you, slow coolant loss, white smoke, and a sweet smell at the tailpipe, before a bad failure hydro-locks a cylinder. A full cooler delete bridges the coolant loop with a clean bypass tube and pulls the leak-prone core out of the system entirely.

Sticking EGR Valve and DDE Limp Mode

A valve that is coked open or seized half-stuck trips DDE map codes, throws a check engine light, and pushes the car into limp mode with a rough, hunting idle. Replacing the valve only resets the clock, because the same soot load carbonizes the new valve within a season. Coding the valve off with a DDE remap and deleting the hardware removes the failure point instead of feeding it new parts.

What Can an EGR Delete Solve?

Cooler Delete Plate and Coolant Bypass

The billet cooler delete plate blanks the exhaust feed, while the TIG-welded T304 stainless bypass tube reroutes the coolant so the loop stays sealed and pressurized. That removes the cracked-cooler leak path, holds antifreeze where it belongs, and drops the heat load on the intake charge. The 6061-T6 aluminum seats against the OEM flange with a high-temperature Viton gasket, so there is no exhaust leak and no weep at the port.

Valve Delete and a Cleaner, Cooler Intake

Capping the EGR valve and pulling the recirculated exhaust out of the equation means the cylinders breathe clean charge air at a lower temperature. Shop owners see sharper throttle, steadier idle, less oil dilution from soot blow-by, and fewer regen cycles on deleted cars. Matched with a DDE remap that holds the valve closed and clears the MIL map, the deleted N47 and N57 run cleaner and live longer.

Shop BMW N47 N57 EGR Delete by Engine & Fitment Guide

• EGR Cooler Delete Kit - Fits the 2.0L N47, N47N, and N47S1 four-cylinder diesel in the BMW 120d, 220d, 320d, 420d, and 520d, plus the X1, X3, and X5 (2007-2015). CNC-machined 6061-T6 billet aluminum cooler delete plate with a TIG-welded T304 stainless coolant bypass tube and high-temperature Viton gasket seals the exhaust feed and bridges the coolant loop.
• EGR Delete & Cooler Valve Delete Kit - Fits the 3.0L N57 and N57S inline-six diesel in the BMW 325d, 525d, and 730d (2008-2016). Billet aluminum valve delete and cooler caps with high-temperature Viton gaskets blank the exhaust feed and close out the leaking cooler circuit.

Why Choose EGR Performance?

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What does a BMW N47 N57 EGR delete do?

An EGR delete removes the exhaust gas recirculation path on the BMW 2.0L N47 and 3.0L N57 diesel by blanking the exhaust feed and bridging or capping the EGR cooler circuit.
Instead of routing hot, sooty exhaust back into the intake, the cylinders pull clean charge air, which cuts the carbon buildup that cokes the swirl flaps and inlet ports.
Paired with a DDE remap that holds the valve closed, it lowers combustion temperatures, sharpens throttle response, and pulls the leaking cooler out of the coolant loop.

Will this N47 EGR delete kit fit my BMW 320d E90 or other N47 engine codes?

The 2.0L four-cylinder kit is engineered for the N47 family, including the N47N and N47S1 variants, and it fits the 120d, 220d, 320d, 420d, and 520d along with the X1, X3, and X5 that share the same N47 block and cooler layout.
The E90 320d with the N47 is covered directly by this kit.
If your car carries a specific code like N47D20C, N47D20U, or N47D20K, confirm the cooler and valve orientation against the kit before ordering, since a few late and market-specific calibrations differ slightly.

What is the difference between an EGR blanking plate, an EGR cooler delete, and EGR off?

A blanking plate is a flat metal disc that blocks the exhaust feed at the port, while the cooler itself stays in place and still carries coolant through its core.
A full cooler delete kit removes or bypasses the cooler and bridges the coolant hoses, which is what stops the internal coolant leaks that plague high-mileage N47 and N57 engines.
EGR off is the software side, a DDE remap that commands the valve to stay closed and clears the map and MIL codes so the deleted car runs clean.

Can I delete the EGR and still keep the DPF on my BMW diesel?

On a stock BMW diesel that still runs its DPF, most specialists advise against a full EGR delete, because the EGR cycle is part of what lets the DPF regenerate cleanly.
Removing it can shift the exhaust heat and soot load and accelerate DPF clogging, so a proper build either codes the valve closed with the DPF intact or pairs the EGR delete with a full DPF delete and remap.
This collection carries the N47 and N57 EGR cooler and valve delete hardware for off-road, fully deleted builds, and we do not stock a BMW N57 DPF delete kit here.

Do I need an ECU remap or DDE coding after fitting the delete kit?

Yes, the hardware delete has to be matched with software.
Bolting on the plate or cooler delete without coding the DDE will throw an EGR map or MIL code, trigger a check engine light, and can push the car into limp mode.
The EGR off remap tells the engine the valve is gone, holds it closed, and keeps the rest of the engine management happy on the deleted build.

Does this kit fit the BMW B47 diesel engine?

It does not, these kits are built for the older N47 2.0L and N57 3.0L engines, not the B47 that replaced the N47 from roughly 2014 onward.
The B47 uses a different modular EGR and cooler layout, so an N47 plate will not line up on a B47 block, and we do not carry a B47 EGR delete kit in this collection.
For a B47 car, confirm the exact engine code and cooler arrangement with our tech team before ordering.

What are the symptoms of a failing N47 or N57 EGR valve or cooler?

Watch for a rough or hunting cold idle, white smoke from the tailpipe, unexplained coolant loss, and a check engine light with EGR or DDE codes stored in the map.
A sticking valve causes limp mode and sluggish throttle, while a leaking cooler dumps coolant and soot into the intake and can even hydro-lock a cylinder in bad cases.
If you are losing coolant with no visible external leak, the EGR cooler on the N47 and N57 is one of the first components to pressure-test.

Will the N57 kit fit the higher-output N57S, the 335d, 535d, or X5 30d?

The 3.0L inline-six kit covers the N57 and N57S family listed for the 325d, 525d, and 730d, and shares the same core cooler and valve layout across the 30d outputs.
The uprated N57S and multi-turbo variants fitted to cars like the 335d, 535d, and some X5 and X6 outputs run different boost and plumbing, so confirm your exact engine code and cooler configuration before ordering.
If your car is an N57S with the higher-output calibration, message our tech team with the VIN and engine code for a fitment check.

What materials is the kit made from, and is the hardware included?

The delete plates and valve caps are CNC-machined from 6061-T6 billet aluminum, with TIG-welded T304 stainless steel coolant bypass tubes and high-temperature Viton gaskets for a leak-free seal against the OEM ports.
The billet hardware resists the heat and corrosion of the deleted, higher-EGT off-road build, and the kits ship with the gaskets and fittings needed for the install.
Each kit is matched to the N47 or N57 port geometry, so you are not hand-fitting a generic blank.

Is an EGR delete street legal, and what is your shipping and return policy?

Removing the EGR system is for competition and closed-course off-road use only, and these kits are sold for that purpose.
Emissions laws vary by jurisdiction, so confirm what is legal in your area, confirm your exact N47 or N57 engine code for fitment before ordering, and run the delete only on vehicles not used on public roads.
Every order includes free shipping, is backed by a 1-year warranty, and comes with our 45-day return policy.