Heavy Equipment Parts Online | Excavator, Dozer, Loader & Forklift Parts | ESIKS
Quick OrderParts Quote
Quick OrderParts Quote
All Brands All Equipment Must Buy PRO Program About Esiks

Contact Info
  • Address: LG 1/F, HKPC Building, Hong Kong
  • Phone: +1(571) 575 7316
  • Email: [email protected]
  • Hours: Mon - Fri 9:00 - 18:00
About Us
  • About Us
  • Contact
  • Parts Quote
  • Become Dealer
Customer Service
  • FAQ
  • Shipping
  • Payment
Policies
  • Returns
  • Privacy
  • Terms
Brand Character
Our Partners
DHL UPS FedEx USPS
Payment Methods
Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods Payment Methods
Follow Us
F Y T
© 2016– ESIKS All Rights Reserved | Privacy Policy | Terms & Conditions | Cookie Settings
Home / Boom Cylinder Seal Kit / Boom Cylinder Seal Kit 278-8641 for Caterpillar CAT Excavator 303.5C 303.5D 303.5E 303C 304D 304E
Product Image
Click to view full image

Boom Cylinder Seal Kit 278-8641 for Caterpillar CAT Excavator 303.5C 303.5D 303.5E 303C 304D 304E

0.0(0 Reviews)Add Your Review
$43.58

PRO Program members can receive tiered savings on this line—up to 20% more off for qualifying accounts.

Shipping estimate & delivery timing

SKU: ESY6250
In Stock
🎁

Share & Save!

Share this product on social media and get an exclusive discount code!

Click any platform below to share this product. After sharing, you'll receive a discount code!

Trusted by Parts Buyers Worldwide

Built to support repair shops, fleets, and equipment owners with dependable parts sourcing and responsive service.

1-Year Parts Warranty

Qualifying new parts include 1-year coverage. Review the Warranty Policy section for coverage details, claim steps, and exclusions.

90-Day Return Window

Eligible orders may qualify for returns within 90 days. See the Easy Return Policy section for conditions and next steps.

Responsive Parts Support

Send a question through Ask a Product Question or the contact form. Our team reviews requests on business days and follows up as quickly as possible.

Boom Cylinder Seal Kit 278-8641 for Caterpillar CAT Excavator 303.5C 303.5D 303.5E 303C 304D 304EReplace Part Number:278-8641, CA278-8641, 2788641Applications:Fit for Caterpillar Excavator: 303.5C, 303.5D, 303.5E, 303C CR, 304D CR, 304ESee Details:303.5 D Mini Excavator RHP00001-UP (MACHINE) POWERED BY S3Q2 Engine303.5C CR Mini Hydraulic Excavator DMY00001-UP (MACHINE) POWERED BY S3Q2 Engine303.5E CR Mini Hydraulic Excavator JX200001-UP (MACHINE) POWERED BY C1.8 Engine303.5E Mini Hydraulic Excavator RKY00001-UP (MACHINE) POWERED BY C1.8 Engine303.5E Mini Hydraulic Excavator RSE00001-UP (MACHINE)303.5E Mini Hydraulic Excavator SFH00001-UP (MACHINE)303.5E2 CR Mini Hydraulic Excavator AC500001-UP (MACHINE) POWERED BY C1.7 Engine303.5E2 CR Mini Hydraulic Excavator CR900001-UP (MACHINE) POWERED BY C1.7 Engine303.5E2CR Mini Hydraulic Excavator CR600001-UP (MACHINE) POWERED BY C1.7 Engine303C CR Mini Hydraulic Excavator BXT00001-UP (MACHINE) POWERED BY S3Q2 Engine304D CR Mini Excavator TYK00001-UP (MACHINE) POWERED BY S3Q2 Engine304E Mini Hydraulic Excavator SSC00001-UP (MACHINE)304E Mini Hydraulic Excavator TSR00001-UP (MACHINE)304E Mini Hydraulic Excavator TTN00001-UP (MACHINE)304E2 CR Mini Hydraulic Excavator GC500001-UP (MACHINE) POWERED BY C2.4 Engine304E2 CR Mini Hydraulic Excavator HC500001-UP (MACHINE) POWERED BY C2.4 Engine304E2CR Mini Hydraulic Excavator FC200001-UP (MACHINE) POWERED BY C2.4 Engine

Product Questions & Answers (0)

Official answers about compatibility, package contents, specifications, installation, shipping, and warranty for Boom Cylinder Seal Kit 278-8641 for Caterpillar CAT Excavator 303.5C 303.5D 303.5E 303C 304D 304E (SKU: ESY6250).

No product questions yet. Ask us using the product question form.

Ask a Product Question

Ask a Product Question

Send us your product question and we'll reply by email.

Warranty Policy

Every new aftermarket part from us includes a 1-year warranty. Full terms, coverage, and how to make a claim: Warranty Assistance.

Shipping Policy

We ship to customers around the world. Orders are sent with our standard courier service—trackable, dependable, and easy to work with. On this product page, use Get Estimate under the price to see shipping cost and estimated delivery for your location. For destinations, rules, and full details, read our Shipping Policy Details.

Easy Return Policy

We want you to be confident in your order. If you are not satisfied, you may qualify for a return or refund within 90 days, subject to conditions. See our Easy Return Policy for eligibility, steps, and exceptions.