





MMX Performance - Baffled oil sump | BMW N55 F2x & F3x | M135i | M235i | 335i | 435i
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Description
It’s well documented that the N55 engine found in the M135i I M235i I 335i I 435i is prone to oil starvation issues when pushed hard on the road and even more so when used on track.
If you're ever planning to use your car on track, or even particularly hard road driving, this really is an essential upgrade. Total engine failure is a very real possibility if not. Ask us how we know....!
The problem is especially pronounced under hard braking, when the oil pools at the front of the oil pan under the lateral g-force, allowing the pick-up to run dry. Even a fraction of a second of no oil feed can be enough to do lasting damage to your engine, any longer and it's almost certain to lead to engine failure. And that's where this Baffled Sump comes in.

The MMR Performance Baffled Sump has been extensively engineered from the ground-up to provide effective oil control, reducing surge and maintaining a more constant oil pressure; it's the ultimate bolt-in solution available to protect your engine's longevity.
Featuring a total of 7 sophisticated one-way oil control flaps and specific baffling, the T-6061 anodised MMR sump baffle has been tested over thousands of miles of track and road use where the data we collected has proven its effectiveness, plus highlighted that it's baffles correct the worst surge problems under hard braking.

Unlike other solutions available that require a plate to be welded in, the MMR solution is simply bolted into place making the addition of the baffle considerably easier and more accessible to install.
Fitment really is an absolutely essential insurance policy for any hard-driven N55 F-series car.

Note: For reference, normal idling pressure when warm is 1.5 bar.
| 1 Series | F20/F21 | 2011 - 2019 | M135i | N55 |
| 2 Series | F22/F23 |
|
M235i | N55 |
| 3 Series | F30/F31 |
|
335i | N55 |
| 4 Series | F32/F33 |
|
435i | N55 |
NOTE: Does not fit x-Drive Models.
More information
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Warranty, Shipping and Returns
Warranty: Products are supplied with the applicable manufacturer warranty.
Shipping: We offer UK and worldwide shipping. Delivery estimates are shown above.
Returns: Eligible unused items can be returned within 14 days in accordance with our returns policy.
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Specifications
- Brand
- MMX Performance (Formally MMR)
- Product type
- Engine Parts
- SKU:
- MMR20-0501
- Vehicle make
- BMW
- Vehicle model
- 335i, 435i, M135i, and M235i
- Vehicle variant
- F20, F21, F22, F23, F30, F31, F32, F33, F34, and F36

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Need help?
MMX Performance FAQs
Helpful answers before you order. Need more detail? Our team can help.
How do I confirm this part fits my vehicle?
Check the model, year, engine, chassis and any exclusions in the product description. Select the required option before adding to your basket. The vehicle selector helps narrow your search; contact us if your car has different factory options or existing modifications.
Can I order this for a modified car?
Existing modifications can change compatibility. Tell us which related parts are already fitted and how you use the car so we can help you check the right specification before ordering.
When will my order arrive?
Select your required option and check the live availability message above. Dispatch is when your order leaves us; delivery takes additional time and depends on the service and destination. If no verified lead time is shown, or you need the item for a fitting appointment or event, contact Nineteen72 Performance before ordering.
What is included in the price?
Check the product description, selected option and stated quantity before ordering. Images may show optional equipment or an example installation. If you need a matching pair, a complete kit or additional hardware, ask us to confirm exactly what is included.
How do I get help before ordering?
Contact Nineteen72 Performance with a link to this product and your question. For vehicle-specific parts, include your model, year, engine and any modifications that may affect compatibility.
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