SKU: 46557250543

Bilstein B3 OE Replacement (Air)-Air Suspension Spring (40-273778)

Sale price$220.05 Regular price$244.50
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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1

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Description

Bilstein B3 OE Replacement (Air)-Air Suspension Spring (40-273778)The Bilstein B3 air spring provides a perfect driving experience under high load, due to the constant counter pressure in the bellows of the air spring. This is an optimum OE replacement for vehicles in which the air spring and shock absorber are installed as separate units. Bilstein B3 OE Replacement (Air) suspension air bags are designed to replace the original suspension air bags on select European brand vehicles. Bilstein is an OE supplier for air

The Bilstein B3 air spring provides a perfect driving experience under high load, due to the constant counter-pressure in the bellows of the air spring. This is an optimum OE replacement for vehicles in which the air spring and shock absorber are installed as separate units. Bilstein B3 OE Replacement (Air) suspension air bags are designed to replace the original suspension air bags on select European brand vehicles. Bilstein is an OE supplier for air suspension systems; the quality of these products meets, and typically exceeds, the standards set forth by the vehicle's manufacturer. Each B3 OE Replacement (Air) suspension air bag is designed to connect directly into the original connectors on the vehicle, ensuring modification-free installation and restoration of the original feel of the vehicle.

Position: Rear

Features:

  • Uncompromising comfort and driving characteristics
  • Rapid adjustment to road and driving conditions
  • Constant damping power under any load

The delicate axial bellows of the air spring provide very sensitive spring behaviour with a comparably low rolling radius. This ensures optimum functionality even in confined working chambers. Due to the permanent load (contraction, extension, different pressures and temperatures), the material is worn out and may eventually leak. If the air bellows cannot be inflated any more, the vehicle is no longer fit to drive. Technical further developments from the original application to today’s part are usually easily recognizable. Due to higher efficiency and Bilstein's obligation to increasingly employ environmentally friendly materials, the sheathing of the bump stop no longer contains chromium VI. Apart from that, all old parts by Bilstein are recycled in an environmentally friendly manner via the Partslife initiative. Due to the permanent movement and mileage, the high gas-pressure and the permanent oil contact, the seals in particular will become worn. If oil leaks, the air suspension module and other parts such as seals and valves lose their functionality.

  • Uncompromising comfort and driving characteristics
  • Rapid adjustment to road and driving conditions
  • Constant damping power under any load

The delicate axial bellows of the air spring provide very sensitive spring behaviour with a comparably low rolling radius. This ensures optimum functionality even in confined working chambers. Due to the permanent load (contraction, extension, different pressures and temperatures), the material is worn out and may eventually leak. If the air bellows cannot be inflated any more, the vehicle is no longer fit to drive. Technical further developments from the original application to today’s part are usually easily recognizable. Due to higher efficiency and Bilstein's obligation to increasingly employ environmentally friendly materials, the sheathing of the bump stop no longer contains chromium VI. Apart from that, all old parts by Bilstein are recycled in an environmentally friendly manner via the Partslife initiative. Due to the permanent movement and mileage, the high gas-pressure and the permanent oil contact, the seals in particular will become worn. If oil leaks, the air suspension module and other parts such as seals and valves lose their functionality

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 46557250543

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Patricia Cummings
Dallas, US
★★★★★ 4
Very soft and cool.
Color: Dark Gray, Size: Queen
Very comfortable and cooling. But after a couple of washes the stitching starts to unravel.
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Reviewed in the United States on May 3, 2026
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Aubrey Roths
Alexandria, US
★★★★★ 5
Love them
Color: Black, Size: Standard
I LOVE THESE PILLOW CASES. I love the zipper so it stays on the pillow, how it stays cool, and the fabric. Worth it 100%
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Reviewed in the United States on June 5, 2026
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Haley
Whiting, US
★★★★★ 5
BUY IT!!
Color: Light Gray, Size: Standard
Love the material super soft and smooth like silk. It’s also nice and cold for when I got to bed! Definitely recommend
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Reviewed in the United States on June 3, 2026
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Gómez
Grantham, US
★★★★★ 5
Actually feels cool at night
Color: Light Gray, Size: Standard
I’ve been using these for several days now and I did notice a difference. I tend to get hot while sleeping, so I was curious if they would actually help, and they do feel cool when you lay on them. I also like that they’re soft and comfortable, not that weird texture some “cooling” products have. So far, I’ve been really happy with them.
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Reviewed in the United States on May 23, 2026
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Larrisa D
Draper, US
★★★★★ 5
🧊 PERFECT for hot sleepers!! BUY THEM 🤩
Color: 01 - Light Grey, Color: 01 - Light Grey
🧊🧊 baby 🤩😍 I am OBSESSED!! Pillow whore here 🤭 and I very rarely find anything worth writing a 5 star review for but let me just save you the time of searching anymore for the PERFECT pillow cases for hot sleepers!!! BUY THEM! 😍 I promise you will NOT be disappointed!! I have spent so much $ on pillow cases over the years, trying to find the perfect cooling ones... These are it!! 🤭🥳
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Reviewed in the United States on May 8, 2026

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