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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
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Description
Wavetrac Differential, BMW early E9x 335i all E39 540i (215K axle with bolt on ring gear)The BMW E39 540I Differential is a state of the art helical gear differentials designed, developed, and manufactured in the USA by AutoTech Driveline. The Wavetrac Differential is the only torque biasing differential on the market with patented technology that mitigates wheelspin when an unloaded wheel condition arises. During zero axle load conditions, the Wavetrac cam device acts to create internal load, maintaining drive on the gripping wheel
The BMW E39 540I Differential is a state-of-the-art helical gear differentials designed, developed, and manufactured in the USA by AutoTech Driveline. The Wavetrac Differential is the only torque biasing differential on the market with patented technology that mitigates wheelspin when an unloaded wheel condition arises. During zero axle load conditions, the Wavetrac cam device acts to create internal load, maintaining drive on the gripping wheel instead of acting like an open diff (and going nowhere!). Super strong 9310 alloy steel gears are enclosed in case-hardened steel bodies, held together with ARP fasteners. All Wavetrac differentials include a transferable, Limited Lifetime Warranty.
Note: Fits Bolted Ring Gear BMW 215K Axle:
E9X 335i M/T <03/2007 E9X 335i A/T <03/2007. All E39 540i & E52 Z8.
Note: Fits Bolted Ring Gear BMW 215K Axle:
E9X 335i M/T <03/2007 E9X 335i A/T <03/2007. All E39 540i & E52 Z8.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
So cute
Color: Blue, Color: Blue
These are so soft and fuzzy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Soft & fluffy. Stuffy arm rest.
Color: Purple, Color: Purple
Soft and fluffy & my fav color purps. Now I'm looking for other purple accessories to go with my 2021 Honda CRV. I don't think this cover would be be enough for a large SUV arm rest such as a Navigator... But yea, order if you want some color & funk in the ride
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Reviewed in the United States on February 25, 2026
★★★★★ 1
Return refund impossible to receive also it’s tacky looking
Color: Black
First off this item said it was fit, but it did not second of all I went to return it and they could only be returned to the original payment method my credit card. My bank is not showing anything. Amazon is zero help trying to say it went back on a gift balance, which I have photo proof that both are incorrect. I tried to reach out to the seller and they were also zero help so I advise one not to buy this because it’s small and cheap looking too you can’t get your refund back.
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Reviewed in the United States on October 30, 2025
★★★★★ 4
It’s so so but ok
Color: Champagne
The color is good and the hair is not as silky as my car seat or seatbelt covers. Also the hairs really get matted. It may just be from elbows but it gets so matted it is hard to undo. And when you do get it good it happens right again and frankly looks bad and unkempt. Other than that it fits right and is more comfy than original so I leave it on. Even with vacuum at car wash the mats stay so it seems eventually it will be too much. I have had it about a month. Maybe a shorter pile is a better option for armrest, like shearling pile. I’ll try that when this one is too far gone. It wasn’t expensive and is still worth the money to not have a blazing hot armrest so I m good for now.
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Reviewed in the United States on April 17, 2026
★★★★★ 3
🙂↔️
Color: Light Pink, Color: Light Pink
The color is beautiful. Is soft, but it runs very short doesn’t fit my car. I’ve had it for six months and now it looks like a dirty dog lol
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Reviewed in the United States on March 17, 2026
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