Details
Description for 4P9830 Plunger And Barrel
â–¶Specification for 4P9830 Plunger And Barrel
â–¶Exact Fit Guarantee for 4P9830 Plunger And Barrel
â–¶Reviews
Customer Reviews
Original Review (Spanish)
Si necesitas piezas de repuesto a buen precio para tu m?quina grande y quieres un servicio al cliente atento, esta tienda es una muy buena opci?n.
English Translation
If you need affordable replacement parts for your heavy equipment and want attentive customer service, this store is a very good option.
My part was damaged in shipping and everyone was very helpful on get it resolved and sent me another free of charge.
Great Customer Service!
Had some difficulties with the website. Contacted customer service. Once I communicated the issues I was having Steven worked through getting my order processed and making sure I got my receipt and all issues resolved. Perfect!
helpful and professional.
quick and professional service.
Great customer services, the best
Stevens the man. Placed my order and sent him the order # and had me in the loop within an hour.
The customer care response was very awesome. It was more than what I expected
The customer care response was very effective and timely
The response time was amazing
The availability of most of the parts that I wanted was also very awesome
Thanks keep it up
He was a great help with ordering and refunding the sales tax,
Australian buyer, sales where professional and very responsive with secure parts identification.
Highly recommend.
Bedrock Exploration Pty Lt, Australia
Customer Follow-Up After Delivery:
Thank you Deb and your colleague Anthony A for your help in supplying a replacement part which arrived in good time and is running smoothly.
I shall continue to use your services and recommend you to other remote miners, as your services and delivery times are better than our home-based suppliers.
With thanks again.
Regards, Gerard
Amazing Help.
I don't know who I spoke with, but they were helpful. We will be buying those parts shortly.
Product Questions
Frequently Asked Questions
What is the Caterpillar 4P9830 plunger and barrel assembly used for?
A: The 4P9830 plunger and barrel is a precision fuel injection pump component used in Caterpillar diesel engines. It creates the high pressure needed to deliver fuel accurately to the injectors, directly impacting engine power, efficiency, and emissions.
How do I know when the plunger and barrel needs replacement?
A: Signs of wear include loss of engine power, uneven cylinder performance, increased fuel consumption, difficulty starting, and white or black smoke. When injection pressure drops due to worn plunger and barrel sets, overall engine performance suffers significantly.
Is this a high-quality aftermarket or remanufactured part?
A: The 4P9830 is a high-quality aftermarket plunger and barrel assembly that meets or exceeds OEM specifications for dimensional accuracy, material hardness, and injection pressure performance.
Which engines is the 4P9830 compatible with?
A: This plunger and barrel is designed for specific Caterpillar fuel injection pump models. Always verify fitment using your engine's model and serial number. If you are still unsure, reach out to Propel Parts ??? our team will be happy to help you verify compatibility.
Browse our full range of fuel system parts for plunger & barrel sets, nozzles, and other fuel injection components for CAT engines.
Does the plunger and barrel need to be matched as a pair?
A: Yes. Plunger and barrel assemblies are precision-matched pairs. The clearances between them are critical for correct injection pressure. Never mix individual components from different sets, as this can lead to injection failures and engine damage.
Can I install this part myself?
A: Fuel injection pump work requires precision and specialized knowledge. It is recommended to have this component installed by a qualified diesel injection specialist or technician familiar with Caterpillar fuel systems. Incorrect installation can damage the injection pump.
What warranty comes with the 4P9830?
A: All Propel Parts products include a 12-month warranty against manufacturing and material defects. Same-day shipping is available for weekday orders placed before 3pm ET.
Compatible Models
This 4P9830 Plunger And Barrel is compatible with the following models:
3306, D250E, D250E II, D25C, D25D, D300B, D300D, D300E & more...
Shipping | Returns
Shipping
We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.
Easy Returns
Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.
Warranty
Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
Exact Fit Guarantee
Exact Fit Guarantee®
The right part — or we'll make it right.
Order Normally
Know your part number?
Simply place your order.
Not Sure?
Place your order, then send us your serial number before it ships.
We'll verify fit.We Make It Right
Wrong part? We'll make it right.Fast. At our expense.

