305-5291 Common Rail Valve is an aftermarket replacement common rail valve for Caterpillar machines, including 312D, 313D, 319D, 320D and other listed models. In a common rail diesel engine the pressure valves regulate, limit or relieve fuel pressure so the injectors always work within the correct range. It is supplied by LIONKITS as aftermarket new with a 6-month warranty.
305-5291 Common Rail Valve Specifications
- Product Type: Common Rail Valve
- Part Number: 305-5291, 3055291
- Compatible Brand: Caterpillar
- Condition: Aftermarket new
- Product Weight: 2kg/4.4 pounds (1 piece)
- Warranty: 6 months
- Brand: LIONKITS
- Country of Origin: China
Caterpillar Models Compatible with the 305-5291 Common Rail Valve
- Caterpillar 312D 313D 319D 320D
Your model is not listed? Contact LIONKITS via live chat or email with your machine model and nameplate photo, and we will confirm compatibility.
What Does a Fuel Pressure Valve Do?
In a common rail diesel engine the pressure valves regulate, limit or relieve fuel pressure so the injectors always work within the correct range. A pressure control valve sets how much pressure the rail holds, a pressure limiter or relief valve opens to protect the rail if pressure gets too high, and an overflow valve returns excess fuel.
Signs the Valve Needs Replacing
- Hard starting or long cranking: the rail cannot build or hold the right pressure.
- Rough idle or stalling: unstable rail pressure upsets injection.
- Loss of power or smoke: wrong fuel pressure shows up as weak acceleration or black smoke.
- Rail pressure fault codes: the ECU logs low or uncontrolled rail pressure.
- Fuel leaks: diesel at the valve or its fittings points to a failed seal.
These symptoms overlap with worn pumps, dirty oil and clogged filters, so check the basics and measure pressure before replacing the valve.
How to Order and Install the 305-5291 Common Rail Valve
- Confirm your machine model, engine model and the part number on your existing valve before ordering.
- Send a photo of the nameplate or the old valve if you are not sure; LIONKITS will confirm fitment for you.
- Depressurize the fuel system as the service manual specifies and keep everything clean; never loosen high-pressure parts on a running engine.
- Replace the O-rings or sealing washers and tighten to the specified torque.
- Replace the fuel filters, start the engine, check for leaks and read the rail pressure with a diagnostic tool.
Shipping, Payment and Support
- Dispatch and delivery: Your package will be sent within 2-3 business days, and another 3-7 business days to arrive in your country
- Payment methods: Credit Card, PayPal, T/T, Western Union
- Order tracking: A tracking number with a tracking link is sent by email once the order ships.
- Returns and refunds: If you encounter any issues with the product, please contact us promptly and provide detailed feedback. We will handle the return or exchange promptly
Frequently Asked Questions
What is the 305-5291 Common Rail Valve?
The 305-5291 Common Rail Valve is an aftermarket replacement common rail valve for Caterpillar machines, supplied as aftermarket new under part numbers 305-5291, 3055291.
Which Caterpillar models does the 305-5291 Common Rail Valve fit?
It is listed for 312D, 313D, 319D, 320D. If you are unsure, send your machine nameplate to LIONKITS for confirmation.
How do I know a fuel pressure valve has failed?
Typical signs are hard starting, rough idle or stalling, loss of power, black smoke, rail pressure fault codes and fuel leaks.
What are the warranty and delivery terms for the 305-5291 Common Rail Valve?
Warranty: 6 months. Your package will be sent within 2-3 business days, and another 3-7 business days to arrive in your country.
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