2556863 CAT Gasket

$14.33
In Stock • Ships Today • Order By 3pm ET
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ppp-seal
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Details

Description for 2556863 Exhaust Seal

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This aftermarket Caterpillar 2556863 Exhaust Seal 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 Exhaust Seal.
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 2556863 Exhaust Seal

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Replacement Part Number(s): 255-6863
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: 4.92 x 4.92 x 0.12 (inches)
Condition: New

Exact Fit Guarantee for 2556863 Exhaust Seal

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Looking for a reliable replacement Caterpillar 2556863 Exhaust Seal ? 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

★★★★★

Excelente atencion y refacciones de calidad

★★★★★

Rapid response! Excellent service!

★★★★★

They are great !

★★★★★

BEST for Heavy Equipment Parts.
Awesome quality products! Better customer service! Steven is always a pleasure to work with and very prompt in assisting me - thank you!

★★★★★

Great prices prompt courteous customer service and fast shipping.

★★★★★

I almost want to cry ;( writing this review because I dont want people to find out about them and rather keep them in my pocket but they deserve it…
This company is great with Quality Products at amazing prices! Sometimes, their website is not the most accurate but is user friendly and if you got questions they will call back and are very prompt in responding via a call or text to verify inventory before placing an order.
I really appreciate and look forward to continuing to work with you all especially Anthony — he is amazing & the best!!!

★★★★★

Had a great experience with ordering correct engine gaskets for our 3208 caterpillar engine

★★★★★

Great service at an affordable price to get my machine back going.

★★★★★

Having issue running my credit card, Steven was more than helpful to send me a payment link to complete my transaction!

★★★★★

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

Product Questions

Frequently Asked Questions

What is the purpose of the 2556863 gasket?

This gasket creates a tight seal between engine components, preventing leaks and ensuring efficient operation.

What is the Caterpillar 2556863 gasket used for?

The Caterpillar 2556863 gasket is a high-quality aftermarket exhaust seal designed to create a secure seal between engine components and help prevent leaks. It is manufactured to meet or exceed OEM specifications for dependable sealing performance and durability.

How to Install this 2556863 gasket?

Please refer to the following instructions to install
1. First, remove the old gasket and clean the surfaces thoroughly 
2. Position the new 2556863 gasket carefully, making sure it aligns correctly 
3. Reassemble the components evenly and tighten bolts to the recommended specifications to ensure a secure seal

What are the benefits of the 2556863 gasket?

  • Helps create reliable leak-resistant seals
  • Supports proper pressure and exhaust sealing performance
  • Manufactured from durable gasket materials
  • Designed to meet or exceed OEM specifications
  • Helps reduce contamination and leakage risks

Which applications is this gasket suitable for?

The 2556863 gasket is designed for various heavy equipment engines. Always verify your engine model compatibility before installation. Check your manual or reach out to Propel Parts for help verifying fitment.

Is the 2556863 gasket compatible with multiple Caterpillar applications?

Yes, this gasket may fit multiple Caterpillar engines and equipment applications depending on the assembly configuration. If you are unsure don’t hesitate to reach out to Propel Parts for help verifying fitment.

Is this 2556863 gasket reliable under high pressure and temperature?

Yes, this 2556863 gasket is designed to meet OEM specification, providing durability and effective sealing even under extreme conditions.

Why is replacing worn gaskets important?

Replacing worn gaskets helps prevent leaks, pressure loss, contamination, and unnecessary wear on surrounding components while supporting reliable equipment operation.

Can I install this gasket myself?

Yes, with basic mechanical knowledge and proper safety precautions, you can install it yourself. Ensure surfaces are clean and bolts are evenly tightened.

Does the 2556863 gasket meet OEM standards?

Yes, this aftermarket replacement is designed to meet or exceed OEM specifications for fit, sealing performance, and long-lasting durability.

How do I maintain the 2556863 gasket for long-term use?

Take these steps to extend the lifespan of your 2556863 gasket
1. Check for any signs of leaks or wear regularly, 
2. Replace the gasket if necessary. 
3. Proper installation and engine maintenance help extend its lifespan.

Can gasket failure affect equipment efficiency?

Yes. Damaged or failing gaskets may contribute to leaks, reduced system performance, increased maintenance requirements, and premature component wear.

What should I do if the gasket leaks after installation?

Inspect the installation to ensure proper alignment and bolt torque. If leaks persist, reinstallation or professional inspection may be required to correct the issue.

Are related Caterpillar gasket components available from Propel Parts?

Yes. Propel Parts carries a variety of replacement gaskets and sealing components for Caterpillar equipment. You can also explore the Caterpillar Gasket 2832238 for another related sealing option.

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

This 2556863 Exhaust Seal is compatible with the following models:

POWER PACKAGE
C32
GENERATOR
SR4
GENERATOR SET
3408C 3412C C32 CG137-12 G3412C 3406C C18 G3412
POWER MODULE
XQG400 C18
MARINE POWERTRAIN
C12
ENGINE
C32 MARINE G3408 G3412C G3412
PETROLEUM ENGINE
C15 C-15 C32
ROTARY CUTTER
RC7
ENGINE - MACHINE
3208 3408
GEN SET ENGINE
3406C 3306 3406B 3412 3408B 3408C 3408 POWER SYS G3412C 3412C 3306B
MARINE AUXILIARY
C32
MARINE ENGINE
3176C 3176B C30 C32 3408B 3408C C18 MARINE C32 MARINE 3412C 3412E 3306 3412D 3196 C-12 C18 3126B C12 C15 3412 3406B 3406C 3406E C9 C7 3408 3208 3306B
ENGINE - INDUSTRIAL
3406B
INDUSTRIAL ENGINE
3306 C-15 3176B 3412 D333C 3406B 3406C 3406 3412E 3412C 3408B 3408C
GAS ENGINE
G3412 G3408C G3408B G3408 CG137-12
PETROLEUM PACKAGE
TH48-E80 C18

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.

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