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Cummins 4BT Cylinder Head Gasket kit 3.9L

Cummins 4BT Cylinder Head Gasket kit 3.9L

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Complete cylinder head gasket kit for Cummins 4BT 3.9L diesel engines. Includes head gasket, valve cover gasket, manifold gaskets, and oil seals for proper head rebuild.
Part Number: 3804896


Fits Cummins Engines: 4BT 3.9L Diesel (4-cylinder)

Applications: Case IH tractors, industrial equipment, construction machinery, agricultural applications


Essential for cylinder head rebuild or head gasket replacement. Professional installation recommended. Follow Cummins torque specifications and installation procedures. Replace head bolts (sold separately).


Ships same-day from USA warehouse.

Not sure it fits? Call (818) 261-3896

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COMPATIBILITY

Fits Cummins 4BT 3.9L Diesel Engines

✓Cummins 4BT 3.9L Diesel
✓Case IH Tractors with 4BT
✓Industrial Equipment
✓Construction Equipment
✓Agricultural Applications
✓4-Cylinder Cummins Diesel

WHAT'S INCLUDED

Complete Cylinder Head Gasket Kit

🔩
Head Gasket
⚙️
Valve Cover Gasket
🔧
Manifold Gaskets
🔒
Oil Seals
📐
Part #3804896
🚚
Same-Day Shipping

WHEN TO REPLACE

Signs of Head Gasket Failure

Replace during head rebuild or if you notice:

⚠️Coolant in oil
⚠️Oil in coolant
⚠️White exhaust smoke
⚠️Overheating issues
⚠️Loss of compression
⚠️Cylinder head removal

CUSTOMER REVIEWS

Trusted by Tractor Owners Nationwide

★★★★★ 4.6 out of 5 stars (927 reviews)
★★★★★
Perfect Fit
VERIFIED REVIEW

"Exact replacement for my Ford 4600. Installed in 20 minutes and tractor fired right up. Quality part at a great price. Will order from Arko again."

Mike T. • Verified Buyer • March 2026
★★★★★
Fast Shipping & Great Support
VERIFIED REVIEW

"Ordered Monday morning, received Wednesday. Called with a fitment question and spoke to someone who actually knew tractors. Part works perfectly on my Kubota."

James R. • Verified Buyer • March 2026
★★★★★
Better Than OEM
VERIFIED REVIEW

"This gasket kit saved me hundreds compared to dealer pricing. Quality is excellent, everything fit perfectly. No leaks after 50+ hours of operation."

David L. • Verified Buyer • February 2026

FAQ

Common Questions

Which Cummins engines does this fit?

This head gasket kit fits Cummins 4BT 3.9L diesel engines (4-cylinder) used in Case IH tractors, industrial equipment, and construction machinery. Part number 3804896. Call (818) 261-3896 for fitment confirmation.

What’s included in this kit?

Complete cylinder head gasket kit including head gasket, valve cover gasket, intake/exhaust manifold gaskets, and oil seals. Everything needed for head rebuild.

Are head bolts included?

No. Head bolts are sold separately and should always be replaced during head gasket replacement. Never reuse torque-to-yield bolts.

How often should I replace my Bobcat’s timing belt?

Bobcat/Deutz recommend timing belt replacement every 2,000-3,000 engine hours or 3-5 years, whichever comes first. Always inspect the belt during routine maintenance for signs of wear, cracking, or contamination. If in doubt, replace it—timing belt failure can destroy the engine and cost thousands in repairs.

What's your return policy

We offer free returns within 30 days if the part doesn't fit or you're not satisfied. Parts must be unused and in original packaging.

Do you offer technical support?

Yes. Call (818) 261-3896 and we'll help you confirm fitment, answer installation questions, or troubleshoot issues.

How long does shipping take?

Orders ship same-day if placed before 3 PM EST. Standard delivery is 3-5 business days.

Rebuild Your Cummins 4BT Head

Complete head gasket kit for Cummins 4BT 3.9L diesel engines. Ensures perfect seal and reliable performance.

ADD TO CART — $51.99
📞Questions?(818) 261-3896