Description
Product Overview
The Arnott A-2780 Rear Air Spring is engineered to meet the exacting standards of original equipment manufacturers while offering superior value. Constructed from high‑grade steel and machined to a precise square shape, this air spring provides consistent pressure regulation for the rear suspension of BMW 5 Series models, specifically the F07 and F11 chassis. With a weight of 2.66 pounds and compact dimensions of 8.5 x 8 x 10.75 inches, it fits seamlessly into the vehicle’s rear right or left mounting points. The component bears the OEM part number BMW7106781827, ensuring a perfect match for factory specifications. Its universal fit design simplifies inventory management for dealers and service centers, while the machined exterior finish resists corrosion and wear, extending the service life of the suspension system.
![[Product front view showing all components]](https://www.nightynight.store/wp-content/uploads/2026/07/7c1090bf1d754dcb985a91054d297d95.jpg)
Usage
This rear air spring is ideal for a range of applications, from routine maintenance on daily‑driven luxury sedans to performance upgrades for enthusiasts seeking enhanced ride comfort. Whether the vehicle is navigating city streets, highway cruising, or handling the occasional spirited drive, the A-2780 maintains optimal tire contact and damping characteristics. It is particularly beneficial for owners who experience sagging rear suspension, uneven ride height, or reduced load‑carrying capacity. Installation is straightforward for both professional technicians and competent DIY mechanics, requiring only standard hand tools and a basic understanding of the vehicle’s suspension layout. The component’s OE fit guarantees that it integrates flawlessly with existing mounting brackets, bushings, and control arms, eliminating the need for additional adapters or modifications.
Why Choose Us
Choosing the Arnott A-2780 means selecting a product that combines American craftsmanship with cost‑effective pricing. Each unit is engineered and assembled in the United States, adhering to rigorous quality‑control protocols that exceed industry norms. The spring undergoes a multi‑stage testing process, including pressure endurance, fatigue resistance, and dimensional stability checks, ensuring that every piece meets or surpasses OEM performance criteria. In addition, Arnott provides a comprehensive warranty and responsive customer support, offering technical assistance, parts compatibility guidance, and after‑sales service that gives buyers confidence throughout the product lifecycle. By sourcing directly from the manufacturer, customers avoid inflated dealer mark‑ups while still receiving a component that delivers the same reliability and durability as the original part.
Key Features
- Exact OE fit guarantees seamless integration with BMW 5 Series rear suspension.
- High‑grade steel construction provides long‑lasting durability and resistance to corrosion.
- Compact square design simplifies installation and reduces the need for additional hardware.
- Engineered and assembled in the USA, ensuring strict quality control and consistent performance.
- Dedicated customer support and warranty coverage for peace of mind after purchase.
FAQ
Does this air spring fit both left and right rear positions?
Yes, the Arnott A-2780 is designed as a universal rear air spring that can be installed on either the left or right side of the BMW 5 Series rear suspension, matching the OEM part number for both positions.
What is the recommended installation procedure?
Begin by safely lifting the vehicle and removing the wheel. Depressurize the existing air spring, disconnect any mounting hardware, and compare the old component with the new Arnott A-2780 to verify fit. Install the new spring using the original bolts and brackets, torque to manufacturer specifications, and re‑pressurize the system according to BMW guidelines.
Can this spring be used on aftermarket suspension setups?
The A-2780 is optimized for OEM‑type rear air suspension systems. While it may function with certain aftermarket setups, we recommend confirming compatibility with the specific suspension kit to ensure proper performance and safety.
What warranty does Arnott provide for this product?
Arnott offers a limited one‑year warranty covering defects in materials and workmanship. Should any issues arise within the warranty period, contact our support team for a replacement or repair solution.
Is there a recommended break‑in period for the new air spring?
After installation, it is advisable to drive the vehicle gently for the first 10‑15 miles to allow the air spring to settle and achieve optimal pressure distribution. Avoid heavy loads or aggressive driving during this initial break‑in phase.
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