Description
Product Overview
The URO Parts Fuel Injection Fuel Accumulator Diaphragm is a precision‑engineered replacement component designed specifically for classic Mercedes‑Benz models produced between 1972 and 1980. Constructed from a combination of machined metal and high‑temperature resistant plastic, the unit replicates the original equipment (OE) dimensions to ensure a seamless fit on the factory mounting points and fuel line connections. Both the inlet and outlet feature 3‑inch hose barbs, matching the OEM specifications for a leak‑free seal. The diaphragm design automatically regulates fuel pressure, providing a steady flow to the injectors and supporting reliable engine start‑up and performance under a range of operating conditions. Each accumulator undergoes rigorous factory pressure testing to verify its ability to maintain consistent pressure throughout the fuel system.
![[Product front view showing all components]](https://www.opulentmart.store/wp-content/uploads/2026/06/ee83f1baa22c4ac4ba4d125b38281a55.jpg)
Usage
This accumulator is intended for use in gasoline‑powered Mercedes‑Benz vehicles such as the 350SL, 450SEL, 450SL, 450SLC, and 280SE series. It is ideal for owners restoring classic models, as well as professional mechanics servicing vintage fleets. The part fits inside the fuel system, connecting directly to the existing fuel lines without the need for additional adapters. Installation is straightforward for anyone with basic mechanical skills: remove the old accumulator, align the new unit with the original mounting brackets, and secure the hose barbs. The automatic operation mode means no manual adjustments are required after installation, making it suitable for daily driving, weekend cruising, or track use where consistent fuel delivery is critical.
Why Choose Us
URO Parts has a long history of supplying high‑quality replacement components for European vehicles. Our fuel accumulator is manufactured to exact OE specifications, guaranteeing compatibility with original mounts and fuel line geometry. The blend of metal and engineered plastic provides superior resistance to engine heat and the corrosive nature of gasoline, extending the service life beyond that of many aftermarket alternatives. Each unit is pressure‑tested in our facility to ensure it meets or exceeds the performance standards set by the original manufacturer. Additionally, we stand behind our product with a comprehensive warranty and responsive customer support, helping you resolve any fit or performance questions quickly.
Key Features
- Exact OE dimensions ensure a perfect fit on classic Mercedes fuel systems.
- Durable metal and heat‑resistant plastic construction withstands engine bay temperatures.
- Automatic diaphragm design maintains steady fuel pressure for smooth engine start.
- Factory pressure‑tested for reliable performance and leak‑free operation.
- Backed by URO Parts warranty and dedicated after‑sales support.
FAQ
Is this accumulator compatible with all 1972‑1980 Mercedes models?
It fits the 350SL, 450SEL, 450SL, 450SLC, and 280SE models that use the specified 3‑inch hose barb connections. Verify your chassis number against the fit list to confirm compatibility.
Do I need any special tools to install the accumulator?
No special tools are required. Basic hand tools for removing the old unit and securing the new one are sufficient. Follow the included installation guide for step‑by‑step instructions.
Can I use this part with gasoline blends containing ethanol?
Yes, the material selection is compatible with standard gasoline and ethanol‑containing blends commonly used in classic car fuel systems.
What warranty does URO Parts provide for this accumulator?
The accumulator comes with a one‑year limited warranty covering defects in materials and workmanship. Contact our support team for claim assistance.
How does the diaphragm maintain fuel pressure?
The diaphragm flexes in response to fuel flow, automatically adjusting to keep pressure within the optimal range for the injectors, eliminating the need for manual pressure regulation.





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