Thanks for contacting us! We'll get back to you as soon as possible

RennTech ECU Upgrade for the 2006-2011 ML 320 CDI: compact black power module

}

RennTech HHT hand-held tuner graphic with the grey OBD2 module - RennTech ECU Upgrade for the 2006-2011 ML 320 CDI

}

Back of the RennTech HHT tuner with its USB port and status lights - RennTech ECU Upgrade for the 2006-2011 ML 320 CDI

}

RennTech ECU Upgrade 2006-2011 Mercedes-Benz ML 320 CDI W164

Ask an expert

Regular price: $965.15
Regular price: ~~$995.00~~
Sale price: $965.15
Unit price: per

Apply at checkout

Subtotal: $965.15

Quantity:

RennTech ECU Upgrade 2006-2011 Mercedes-Benz ML 320 CDI W164

Subtotal: $965.15

Not sure it fits? Text us your VINSee all fitment

Vendor: RennTech

SKU: 54.164.ML320CDI

Questions before you buy? Talk to a specialist.

Fitment and product questions · 9am–6pm Pacific

Call(310) 231-0292 Text(310) 886-3111 ChatLive chat

Price match: found it cheaper?
Secure checkout · Shop Pay · Affirm
AutoTalent since 2006

Free Shipping

Free standard shipping on orders over $99

Coupon Code on First Order

Price Match Guarantee

Free shipping on $99+ order

30-days Returns

Overview

If you want more from the 2006-2011 ML 320 CDI without touching the hardware, this RennTech ECU Upgrade is the cleanest way to get it. RennTech revises the factory calibration for this engine, raising power and torque through the full band and keeping the smooth manners the car left the factory with. RennTech rates the ML 320 CDI at up to 253 hp and 464 lb-ft with this upgrade, a gain of 23 hp and 75 lb-ft.

Features

Revised ignition timing, throttle mapping, air-fuel ratios and boost control
Gains across the entire rev range, not just at peak
Developed on RennTech's own dyno and road tested
Keeps factory-like drivability and reliability for daily use

What is included

RennTech calibration for your car
Delivery as listed by RennTech for this model (HHT tuner or ECU flash)

Specs

Part number	54.164.ML320CDI
RennTech rated output	253 hp / 464 lb-ft
Gain (RennTech)	+23 hp / +75 lb-ft

Fitment notes

For the ML 320 CDI (W164), 2006-2011 as listed by RennTech. Please include your VIN with the order so RennTech can confirm the exact application. Check the fitment table before ordering, and contact us if your car differs.

Fitment

Make	Model	Chassis	Year	Engine
Mercedes-Benz	ML 320 CDI	W164	2006-2011	-

Fitment

Year	Make	Model
2006–2011	Mercedes-Benz	ML320 CDI

Not sure? Text us your VIN and we’ll confirm.

Shipping & returns

Shipping: Orders ship via UPS, FedEx or USPS, from our facility near Los Angeles or directly from the manufacturer. Rates for many items are weight-based and shown at checkout. If you need it by a certain date, text us before you order.

Returns: Unused items in brand-new condition and original packaging can be returned within 30 days of the invoice date, with a 25% restocking fee unless otherwise specified. In some cases we can offer a lower fee with the balance as store credit. Shipping charges aren't refundable in either direction unless approved by AutoTalent.

Not returnable: special-order or custom items, and anything that has been installed, modified or altered.

Cancellations: free if the item is out of stock or we miss the ETA you agreed to. Other cancellations carry a 5% processing fee to cover card fees we can't recover. Special-order items can't be cancelled.

Damaged in transit? Report it to the carrier and to us within 48 hours, keep all packaging, and don't send anything back without our written approval.

Reviews & questions