New 8H2778 Gasket Replacement suitable for Caterpillar Equipment

$0.36
In Stock • Ships Today • Order By 3pm ET
Excellent on Trustpilot
ppp-seal
Fit Guarantee

Exact Fit Guarantee

This part is guaranteed to fit your machine.

Wrong Part

Wrong Part?

We'll overnight correct part at no cost to you.

Secure Checkout Secure Checkout • Trusted Since 2012
Also accepts PayPal and Apple Pay
Details

Description for 8H2778 General Gasket

â–¶
This aftermarket Caterpillar 8H2778 General Gasket is built to meet U.S. OEM specifications for durability and performance. At Propel Parts, we perform strict quality checks to ensure it fits and functions like your original Caterpillar General Gasket.
Direct Replacement: Engineered for a precise fit in Caterpillar equipment.
OEM-Spec Quality: Manufactured to match the performance of your original part.
Tested Reliability: Strict quality checks are performed before shipping.

Specification for 8H2778 General Gasket

â–¶
Replacement Part Number(s): 8H-2778
Specifications: Aftermarket Part | US OEM Specs.
Shipping: Same Day (Weekdays) | Order by 3pm.
Warranty: Unlimited Mileage | 1 Year Warranty.
Core: No Core Required | No Core Charge.
Weight: 0.03 LBS | 0.01 KG
Dimensions: 3.35 x 3.35 x 0.16 (inches)
Condition: New

Exact Fit Guarantee for 8H2778 General Gasket

â–¶
Looking for a reliable replacement Caterpillar 8H2778 General Gasket ? Order with confidence through our Exact Fit Guarantee.
Verified Fit: Before we ship, we check your part against CAT SIS (Caterpillar Service Information System) to confirm it's the correct match for your machine.
Peace of Mind: If it isn't the right fit, we'll contact you with the correct Caterpillar part number before your order goes out.
Exclusive Guarantee: Enroll in our Exact Fit Guarantee at checkout to ensure you get the part you need the first time.
Reviews

Customer Reviews

★★★★★

Quality Caterpillar parts
Very fast delivery and respons from Propel Parts
This is my second time that I bought something from it, first time delivery time was in one week from US to Serbia

★★★★★

Great site and price

★★★★★

GREAT CUSTOMER SERVICED
WANTED TO THANK PROPEL PARTS FOR THEIR ATTENTION TO AN URGENT MATTER I HAD. THEY RESPONDED QUICKLY & RESOLVED IT. I ALSO WANTED TO MENYTION THAT OUR CUSTOMER'S ARE VERY HAPPY WITH THE PARTS EWE HAVE BEEN ORDERING FROM PROPEL. WE WILL DEFINITLEY CONTINUE TO DO BUSINESS.

★★★★★

I own old cat bulldozers D8k,D8H,D8N that required frequent repairs and servicing. it was erratic and practically cumbersome to keep them running without constant supply of reliable
and affordable spares in Uganda a third world country however,since I started dealing with propel parts US,my bulldozers have earned reliability and efficiency in providing high quality services to clients and making me a great dependable construction company in earth moving.
My shipments are always handled expeditiously and delivered in record time to Uganda this is awesome from Propelparts.
My business is booming by the clock for finding the best partner in Propelparts.

★★★★★

Quick and efficient.
Great products and a great team to deal with. We had a small issue with a missing part and the Customer Services Team dealt with it quickly and efficiently and in a way which left me, the customer, feeling entirely satisfied. Would highly recommend.

★★★★★

Propel parts is a very reliable parts source for heavy equipment
Quick response,good quality parts,favourable prices and always deliver on time

★★★★★

Tiene una buena atención y servicio

★★★★★

My part was damaged in shipping and everyone was very helpful on get it resolved and sent me another free of charge.

★★★★★

:) great service

★★★★★

helpful and professional.
quick and professional service.

Product Questions

Frequently Asked Questions

What is the 8H2778 gasket used for?

The 8H2778 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 8H2778 gasket?

A reliable installation of the 8H2778 starts with inspection and ends with verification. Follow this process:

  1. Shut down, cool, and depressurize the assembly before opening it
  2. Remove the old gasket and scrape the surfaces fully clean
  3. Inspect both faces for warping, pitting, or scoring
  4. Position the new 8H2778 so all ports and bolt holes line up
  5. Torque the fasteners in the correct sequence and re-check for leaks

Which Caterpillar machines is the 8H2778 compatible with?

The 8H2778 is matched to particular Caterpillar equipment, so always verify the application against your parts reference before purchasing. Please reach out to Propel Parts for help verifying fitment.

Does the 8H2778 gasket meet performance standards?

Yes. Propel Parts supplies the 8H2778 as a premium aftermarket part made to meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so you can fit it with confidence.

How often should the 8H2778 be replaced?

Replace the 8H2778 whenever the assembly it serves is overhauled, or any time it shows wear, damage, or corrosion. Following the intervals in your service manual is the best guide.

What are the signs of a worn or failing 8H2778 gasket?

Catching a failing 8H2778 early prevents wider damage. The common warning signs include:

  • 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 8H2778 important, and what related parts work with it?

Keeping the 8H2778 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. Related hardware on our site includes 1352651 Seal Press Rlf and 1698598 Seal O-Ring.

Questions About this Part?
Have a question about fit, compatibility, shipping, warranty, or returns?
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.

1

Order Normally

Know your part number?
Simply place your order.

2

Not Sure?

Place your order, then send us your serial number before it ships.

We'll verify fit.
Truck Icon
3

We Make It Right

Wrong part? We'll make it right.

Fast. At our expense.