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New 4N3858 Gasket Kit Replacement suitable for Caterpillar 3406B, 3408, 3412
- New Gasket Kit Replacement suitable for Caterpillar Equipment
- Made to USA Specification
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Description for 4N3858 Paper Gasket
▶Specification for 4N3858 Paper Gasket
▶Exact Fit Guarantee for 4N3858 Paper Gasket
▶| Models | 3406B, 3408, 3412 & more |
|---|---|
| Dimensions | 7.87x5.51x0.06 |
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Had a great experience with ordering correct engine gaskets for our 3208 caterpillar engine
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The best supplier ever we mainly deal with most rare needed parts .. i highly recommend .. they are very very honest
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I would give 5 stars but my first time ordering from here and using aftermarket parts. The price is reasonable comparing to original Cat parts and the customer support is great and hoping to do more business with them
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Tiene una buena atención y servicio
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Great customer service
Anthony was very professional and on top of what needed to be done to get my order verified and moving forward.
Frequently Asked Questions
What is the 4N3858 gasket used for?
The 4N3858 gasket seals the joint between two mating surfaces, holding pressure and preventing fluid or gas leaks. A flat, intact gasket is essential to a leak-free assembly.
How do I install the 4N3858 gasket?
Fitting the 4N3858 correctly comes down to clean surfaces and following the manual’s sequence. Work through these steps:
- Shut down, cool, and depressurize the assembly before opening it
- Remove the old gasket and scrape the surfaces fully clean
- Inspect both faces for warping, pitting, or scoring
- Position the new 4N3858 so all ports and bolt holes line up
- Torque the fasteners in the correct sequence and re-check for leaks
Which Caterpillar machines is the 4N3858 compatible with?
The 4N3858 gasket is used across many Caterpillar applications, but the correct fit depends on your exact model and assembly. Always cross-check fitment using your service manual or part reference guide before ordering. If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.
Does the 4N3858 gasket meet performance standards?
Yes. The 4N3858 is built to meet OEM specifications for fit, strength, and service life. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications to keep the assembly protected.
How often should the 4N3858 be replaced?
Service life for the 4N3858 depends on operating conditions and load. Replace it on inspection findings or at the interval your manual specifies rather than waiting for a failure. This part is commonly replaced alongside the 5J0964 Seal U Cup, so it is worth checking both while the assembly is open.
What are the signs of a worn or failing 4N3858 gasket?
When the 4N3858 reaches the end of its service life, the symptoms tend to show up first as performance or wear issues. Look for:
- External leaks at the mating joint
- Loss of pressure or compression
- Coolant, oil, or gas cross-contamination
- A crushed, blown, or hardened gasket on inspection
Why is the 4N3858 gasket important, and what related part is commonly replaced with it?
Replacing the 4N3858 when needed keeps the system within its designed clearances and loads, which extends the life of the surrounding parts and supports dependable performance. The 8T9527 Seal O-Ring is commonly serviced together with this part, so it is worth replacing both while access is available.
This 4N3858 Paper Gasket is compatible with the following models:
3406B, 3408, 3412 & more...
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.
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