Overview – LINE-FUEL (COOLER) 501-0818
501-0818 is the fuel cooler line used on CUMMINS Onan generator sets to carry fuel between the fuel cooler and the engine fuel system. We can supply this line as well as the related family numbers listed below, in stock or available on order – welcome to enquire by part number.
Parts Characteristics
The line is formed to the original routing and end fitting arrangement, with the bends, flares and bracket positions matched to the generator set layout. The tube material and wall thickness are selected for fuel pressure and the vibration of a running genset, and the end fittings seal with the original connectors so the fuel circuit stays leak-free. The length and fitting orientation follow the original drawing, so the line drops into place without bending or cutting. As an OEM-spec part, it is a direct replacement for the original CUMMINS Onan fuel cooler line.
Applicable Models & Applications
This fuel cooler line is used on CUMMINS Onan generator sets fitted with a fuel cooler circuit, where the fuel is cooled before returning to the tank or the injection system. Typical applications include the Onan RV, marine and standby generator models that carry the original 501-0818 line. Confirm the fitting style, line length and routing against the line removed from your set before ordering.
Maintenance & Replacement
A fuel cooler line fails gradually, and the first signs are damp fittings, fuel smell around the cooler and small wet spots under the set. Inspect the line and its end fittings whenever fuel odour or leaks are noticed, looking for cracked flanges, chafed tubing and loose connectors. When replacing, clean the fittings, fit the new line along the original routing, and torque the connectors to the original specification before pressure testing the circuit. Replace the line before a hard failure strands the generator set.
Price Reference (USD)
The reference price for this LINE-FUEL (COOLER) (501-0818) is approximately USD 150 – 420 per unit depending on grade, quantity and shipping destination. This is a planning estimate only – confirm current pricing and availability with our sales team before ordering.
Value & Service
A line with the wrong fitting orientation can chafe against the enclosure and fail within hours, so we verify 501-0818 against the original CUMMINS Onan routing and connector specification before dispatch. We stock the line together with the fuel cooler service parts and the family numbers below, and they can ship in one tracked order with DHL, FedEx or UPS. Our team will confirm the correct line for your generator set before you buy.
Also in the LINE-FUEL (COOLER) Series: 501-0892. The same-series numbers share the fuel cooler circuit application and can be supplied on the same order.
Racer Machinery is a dedicated construction-machinery parts supplier – send us your part number and generator model, and we will confirm fitment, price and lead time for this fuel cooler line and related CUMMINS Onan fuel system components.
