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Description
Mosselman Twin Oil Cooler Extension Kit - E8x 135i, 1 Series M (1M)Mosselman Turbo Systems is a Dutch manufacturer of high quality performance parts designed specifically for use in BMW and MINI cars. Mosselman has been in the tuning business for over 40 years and the vast majority of their products has been designed, tested and manufactured in house. If you own a BMW or MINI, they are a specialist in these makes. PRODUCT INFORMATION THE NEXT LEVEL OF TEMPERATURE CONTROL Mosselman Twin Oil Cooler Extension Kit for
Mosselman Turbo Systems is a Dutch manufacturer of high-quality performance parts designed specifically for use in BMW and MINI cars. Mosselman has been in the tuning business for over 40 years and the vast majority of their products has been designed, tested and manufactured in-house. If you own a BMW or MINI, they are a specialist in these makes.
PRODUCT INFORMATION
THE NEXT LEVEL OF TEMPERATURE CONTROL
Mosselman Twin Oil Cooler Extension Kit for the E8x 135i and E82 1 Series M (1M). Upgrade your Single Oil Cooler Kit to a Twin Oil Cooler Kit.
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The Twin Cooler Extension Kit comes with
1x Setrab 19-row oil cooler.
1x Pre assembled stainless steel bracket for the left side.
1x Complete mounting bracket for the left cooler.
1x Hose kit.
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Warm Climate and Track use
We recommend the Twin cooler setup for cars in very warm climates and cars that are used on a track.
Installation instructions come with kit
Suitable for E82 135i Coupe, E88 135i Convertible and E82 1 Series M (1M) models fitted with N54 or N55 engine.
Suitable for E82 135i Coupe, E88 135i Convertible and E82 1 Series M (1M) models fitted with N54 or N55 engine.
EXPERT'S ADVICE
"Upgrade the Single Oil Cooler Kit of your BMW 1-Series E8x to a Twin cooler setup with this Twin Cooler Extention Kit E8x. The twin setup is recommended for cars in a very warm climate and cars that will be used on a track.
The Twin Extension kit comes with the 1x Setrab 19 row oil cooler, 1x stainless MSL bracket, 1x Mounting bracket, and a hose kit (1 oil hose).
Note: This item is not ''plug-and-play''. You will need to make some adjustments to the car to fit the bigger oil cooler and bracket. Additional OEM products that you need for the installation are: oil cooler front air duct (left), wheel arch air duct (left), inside wheel arch for the auxiliary cooler (left).
Installing the twin oil cooler extension on a BMW 1M requires some extra modifications to make the left oil cooler fit into the car. The 1M is equipped with an auxiliary water cooler on the left side of the car. This is the place where the second oil cooler needs to be installed. To make this fit the auxiliary watercooler has to be removed and probably a bigger radiator has to be installed. It will add extra time to the installation process. "
The Twin Extension kit comes with the 1x Setrab 19 row oil cooler, 1x stainless MSL bracket, 1x Mounting bracket, and a hose kit (1 oil hose).
Note: This item is not ''plug-and-play''. You will need to make some adjustments to the car to fit the bigger oil cooler and bracket. Additional OEM products that you need for the installation are: oil cooler front air duct (left), wheel arch air duct (left), inside wheel arch for the auxiliary cooler (left).
Installing the twin oil cooler extension on a BMW 1M requires some extra modifications to make the left oil cooler fit into the car. The 1M is equipped with an auxiliary water cooler on the left side of the car. This is the place where the second oil cooler needs to be installed. To make this fit the auxiliary watercooler has to be removed and probably a bigger radiator has to be installed. It will add extra time to the installation process. "
MARK HENDRIKX - AUTOMOTIVE ENGINEER AT MOSSELMAN
Models
- 1 Series / E82 / E88 (2007-2013) / 1 Series M (1M)
- 1 Series / E82 / E88 (2007-2013) / 135i N54
- 1 Series / E82 / E88 (2007-2013) / 135i N55
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.1 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Easy to install and easy to cut! Good quality
Style: 30 sqft
Details in the video! Only used dynamat in the past so I was hesitant to use this. Hesitant no more and the price was good. Good value, easy install, very happy!
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Reviewed in the United States on January 26, 2026
★★★★★ 5
Worth every penny
Style: 6 sqft
Works great! I have a van and it took all the noise out of the rear doors. I am almost in shock at how quiet it is now.
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Reviewed in the United States on May 7, 2026
★★★★★ 4
Great for what it does but not a miracle
Style: 30 sqft
Sticks well. Definitely thicker and nicer than the Kilmat version. If I were buying again I would just buy more of this, the value is better even though you get less total coverage per pack.
Can be cut to size easily, we used a box cutter which got a little gummed but but not too bad. we were able to get it in and around everywhere we needed to put it and it held up well as we were mashing it into weird spots. It doesnt smell hardly at all while being applied and once its on there is no smell whatsoever The product is great for what it is. 4 stars only because I think it gets oversold for how much this alone can do. We did notice a slight reduction in noise but nowhere near the multiple decibels we see claimed everywhere. If your vehicle is mostly quiet but just has that little bit getting through this will probably do wonders, If you have a vehicle where there's significant engine noise in the cabin you'll need more than just this to bring that down.
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Reviewed in the United States on September 12, 2025
★★★★★ 5
Great product!
Style: 30 sqft
I can say this product makes a huge difference with road noise and is cleaner and easy to work with when applying compared to other mats that cost about the same price.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Very heavy and thick
Style: 30 sqft
I purchased mini brands of sound ending and this is by far the heaviest sound deadening I've ever ordered. I'm not installed yet but I have a good feeling that is going to work exceptionally in blocking sound. If weight is a concern for you I would recommend a lighter product however if sound quality and a quiet ride is your priority this is the one for you.
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Reviewed in the United States on March 18, 2026