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Description
2008-2017 BMW Engine Piston with Rings Set Of (8) N63 4.4 L Twin Turbo V8 – (11257613626, 11257574822, 11257556955)Piston Kit (Set of 8) for BMW 4. 4L V8 N63 Twin Turbo Upgrade your BMW's performance with our premium replacement parts kit. Designed to fit 4. 4L V8 BMW N63B44O0 Twin Turbo Gas engines. This set includes 8 pistons with rings. Please refer to the vehicle fitment chart(s) to confirm fit. Vehicle Fitment Chart BMW Fitment Year Model Body & Trim Engine 2014 X6 M, 50iX 4. 4L V8 Gas 2014 760Li Sedan 4. 4L V8 Gas 2013 X6 M, 50iX 4. 4L V8 Gas 2013 X5 M, 50iX
Piston Kit (Set of 8) for BMW 4.4L V8 N63 Twin Turbo
Upgrade your BMW's performance with our premium replacement parts kit. Designed to fit 4.4L V8 BMW N63B44O0 Twin Turbo Gas engines. This set includes 8 pistons with rings. Please refer to the vehicle fitment chart(s) to confirm fit.
Vehicle Fitment Chart
BMW Fitment
| Year | Model | Body & Trim | Engine |
|---|---|---|---|
| 2014 | X6 | M, 50iX | 4.4L V8 - Gas |
| 2014 | 760Li | Sedan | 4.4L V8 - Gas |
| 2013 | X6 | M, 50iX | 4.4L V8 - Gas |
| 2013 | X5 | M, 50iX | 4.4L V8 - Gas |
| 2013 | 760Li | Sedan | 4.4L V8 - Gas |
| 2013 | 550iX | Sedan | 4.4L V8 - Gas |
| 2013 | 550i | Sedan | 4.4L V8 - Gas |
| 2012 | X6 | M, 50iX | 4.4L V8 - Gas |
| 2012 | X5 | M, 50iX | 4.4L V8 - Gas |
| 2012 | Hybrid 7 | Sedan | 4.4L V8 - Gas |
| 2012 | Alpina B7X | Sedan | 4.4L V8 - Gas |
| 2012 | Alpina B7LX | Sedan | 4.4L V8 - Gas |
| 2012 | Alpina B7L | Sedan | 4.4L V8 - Gas |
| 2012 | Alpina B7 | Sedan | 4.4L V8 - Gas |
| 2012 | 760Li | Sedan | 4.4L V8 - Gas |
| 2012 | 750iX | Sedan | 4.4L V8 - Gas |
| 2012 | 750i | Sedan | 4.4L V8 - Gas |
| 2012 | 750LiX | Sedan | 4.4L V8 - Gas |
| 2012 | 750Li | Sedan | 4.4L V8 - Gas |
| 2012 | 650iX | Coupe, Convertible | 4.4L V8 - Gas |
| 2012 | 650i | Coupe, Convertible | 4.4L V8 - Gas |
| 2012 | 550iX | Sedan | 4.4L V8 - Gas |
| 2012 | 550i | Sedan | 4.4L V8 - Gas |
| 2011 | X6 | M, 50iX | 4.4L V8 - Gas |
| 2011 | X5 | M, 50iX | 4.4L V8 - Gas |
| 2011 | Hybrid 7L | Sedan | 4.4L V8 - Gas |
| 2011 | Hybrid 7 | Sedan | 4.4L V8 - Gas |
| 2011 | Alpina B7X | Sedan | 4.4L V8 - Gas |
| 2011 | Alpina B7LX | Sedan | 4.4L V8 - Gas |
| 2011 | Alpina B7L | Sedan | 4.4L V8 - Gas |
| 2011 | Alpina B7 | Sedan | 4.4L V8 - Gas |
| 2011 | 760Li | Sedan | 4.4L V8 - Gas |
| 2011 | 750iX | Sedan | 4.4L V8 - Gas |
| 2011 | 750i | Sedan | 4.4L V8 - Gas |
| 2011 | 750LiX | Sedan | 4.4L V8 - Gas |
| 2011 | 750Li | Sedan | 4.4L V8 - Gas |
| 2011 | 650i | Convertible | 4.4L V8 - Gas |
| 2011 | 550iX | Sedan | 4.4L V8 - Gas |
| 2011 | 550i | Sedan | 4.4L V8 - Gas |
| 2010 | X6 | M, 50iX | 4.4L V8 - Gas |
| 2010 | X5 | M, 50iX | 4.4L V8 - Gas |
| 2010 | Hybrid 7L | Sedan | 4.4L V8 - Gas |
| 2010 | Hybrid 7 | Sedan | 4.4L V8 - Gas |
| 2010 | Hybrid X6 | - | 4.4L V8 - Gas |
| 2010 | Alpina B7L | Sedan | 4.4L V8 - Gas |
| 2010 | Alpina B7 | Sedan | 4.4L V8 - Gas |
| 2010 | 760Li | Sedan | 4.4L V8 - Gas |
| 2010 | 750iX | Sedan | 4.4L V8 - Gas |
| 2010 | 750i | Sedan | 4.4L V8 - Gas |
| 2010 | 750LiX | Sedan | 4.4L V8 - Gas |
| 2010 | 750Li | Sedan | 4.4L V8 - Gas |
| 2010 | 550iX | Sedan | 4.4L V8 - Gas |
| 2010 | 550i | Sedan | 4.4L V8 - Gas |
| 2009 | X6 | 50iX | 4.4L V8 - Gas |
| 2009 | 750i | Sedan | 4.4L V8 - Gas |
| 2009 | 750Li | Sedan | 4.4L V8 - Gas |
Part Specifications & Numbers
OEM Part Numbers:
Piston:
11257613626 (Replaces 11257576475)
Piston Rings (Set per piston):
11257574822
Snap Ring (Circlip):
11257556955
Notes:
This set includes 8 complete Pistons with Rings.
Engine Application:
4.4L V8 N63B44O0 Twin Turbo (Gas/Petrol/Electric)
Other Names:
Piston, Piston Kit, Engine Piston with Rings Kit, Repair Kit Piston with Rings
Fits BMW Models:
550i, 550iX, 650i, 650iX, 750i, 750iX, 750Li, 750LiX, 760Li, Alpina B7, Alpina B7L, Alpina B7LX, Alpina B7X, Hybrid 7, Hybrid 7L, Hybrid X6, X5, X5 M, X6, X6 M & more
Fits BMW Chassis:
F01, F02, F04, F07, F10, F12, F13, E70 X5, E71 X6, E72 X6 & more
Enhance your driving experience with our top-notch BMW parts. Order now for quality and precision you can trust.
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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Soft and cooling
Color: White, Size: King, Color: White, Size: King
This pillow cover is great! Well made. Not too thin. Fits my queen pillow like a glove. Came out of the washing machine still looking brand new, with no zipper issues, which can happen with lower quality covers. Zero complaints.
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Soft, Cooling Pillowcase That Smooths Out Chunky Filling
Color: White, Size: King, Color: White, Size: King
I accidentally ordered the king size instead of queen, but it still fits my shredded latex foam pillow fairly well and feels comfortable. The pillow has small but chunky latex shreds, and the added foam layer in this pillowcase not only smooths out those chunks but also adds a bit of extra thick comfort, making the pillow feel more uniform.
It seems to help with temperature regulation—if anything, it’s subtly cooler or at least not any warmer than my previous pillowcase. I’ve washed it twice so far, and it shows no wear and seems well built, so it should hold up over time and seems totally washable. Overall, it’s a very functional item, and compared with similar products, the value seems reasonable; I’m happy with the purchase and just wish I had ordered the right size.
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Reviewed in the United States on December 23, 2025
★★★★★ 4
Good quality cover
Color: White, Size: Queen, Color: White, Size: Queen
First, this pillow cover arrived in a plastic bag (see 4th photo), not a box as the photos online show. Although that does not matter to me, it may matter to other people such as those who intend to give this as a gift.
One of the photos I included shows the fabric makeup which is mostly polyester and memory foam with the outer cover having “40% Bamboo Rayon.” It seems like an overstatement to me to market this product as a “quilted bamboo pillow cover” where there’s very little, if any, actual bamboo in it. If you have read up on what “bamboo rayon” actually is, you’ll understand.
The material make up aside, the cover is soft and puffier than a cotton pillowcase. Bamboo rayon does have qualities that allow airflow for a cooling type of effect. It washes very nicely.
As for the size of the pillar cover, I have tried several pillows inside this case, and the case is at least 2 inches longer than every standard pillow I own (See second photo). Pillowcases with a zipper generally are more fitted in every dimension. This pillow cover fits in all dimensions, except for it is longer than necessary. Not a horrible thing, but worth mentioning.
The sewing of this product is good. It has a standard plastic zipper. There’s piping around the entire seam area for touch of class. The gray piping on mine matches the quilting. This is not quilting of the standard sense where threads go through to the other side. It is more of a faux quilting, which you can that on the inside in the photo with the tag.
Overall, it seems to be a good product especially for people who sweat when they sleep.
Quilted Bamboo Pillow Cover Collection – Cooling Pillow Protector with Zipper – Soft, Breathable & Washable Fabric (White, Queen)
$19.99 at the time of this review
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Reviewed in the United States on November 7, 2025
★★★★★ 5
Very easy and convenient
Color: White, Size: Queen
Absolutely in love with this pillow case. I have a tendency to let the kids on the bed with snacks and it’s helpful to just be able to take the case off and put it in the washer when it’s dirty
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Reviewed in the United States on January 11, 2026
★★★★★ 5
These pillows perform wonderfully and they hold up!
Color: Grey, Size: Standard, Color: Grey, Size: Standard
I have had these pillows for 5 years, so mine is not in brand new condition in this photo but they still appear pretty good and function wonderfully. I recommend these to others looking for a soft but supportive pillow. They are the standard microfiber cooling ones. I have one and my daughter (7) has the other. We use them every night and they are just the perfect amount of medium-softness for both of us despite us being very different in size! Still fluff back up, have just enough support and height or thickness in my opinion (I don’t like very firm microfiber pillows as much, and I don’t like the feather pillows that aren’t goose down because they get crunchy and flat). Love these pillows, the price is super reasonable for the product they provide. They have held up this long, I’d say they are of good quality. I’ve just ordered another set for a visit to my mothers house! Our favorite pillows!
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Reviewed in the United States on May 23, 2026