3649981 Cylinder Head Gasket for Cummins

1. Cummins 3649981 Cylinder Head Gasket Overview

The Cummins 3649981 Cylinder Head Gasket is an essential sealing component made for Cummins QSK45/QSK60 engines. It plays a vital role in maintaining the structural integrity of the engine by sealing the combustion chamber, coolant passages, and oil channels between the engine block and the cylinder head. Without a reliable cylinder head gasket, engine compression can drop, coolant may leak into the cylinders, and engine failure becomes a serious risk.

Key Features and Functions – Cummins 3649981:

• Fits Cummins QSK45/QSK60 Engines
• Category: Cylinder Head Gasket
• Seals between the engine block and the cylinder head
• Prevents combustion, coolant, and oil leaks
• New Aftermarket Replacement for bulk orders

2. Cylinder Head Gasket Function and Materials Overview

The Cylinder Head Gasket is a key component that supports engine reliability. It creates a pressure-resistant seal between the engine block and the cylinder head, keeping combustion force contained while also separating coolant and lubrication pathways. In demanding applications like the Cummins QSK45/QSK60 engine, poor gasket performance can result in reduced engine output, fluid system failure, or unplanned maintenance.

To perform under constant stress and fluctuating temperatures, head gaskets are produced using tough, heat-tolerant materials. Common material types include:

• Graphite-based composites for flexibility and thermal stability
• Multi-layer Steel for high mechanical strength
• Metal with bonded rubber to enhance sealing performance in critical areas

3. About MJ GASKET - Experienced Aftermarket Gasket Manufacturer

MJ GASKET is a Taiwan-based aftermarket gasket manufacturer specializing in commercial and heavy-duty engine applications. With decades of experience in the gasket industry, we support global B2B clients, including engine part distributors, rebuilders, and workshop operators.

Our gasket product line covers a wide range of engine models from brands such as Cummins, Caterpillar, Detroit Diesel, and Volvo, including pickup truck engines like the Ford Powerstroke and GM 6.6 Duramax. We also offer gaskets for engine related equipment such as heat exchangers, hydraulic pumps, and air brake compressors.

To ensure accuracy and quality, we inspect our gaskets using precision 2D and 3D measuring equipment, verifying all critical dimensions before shipment.

Whether you're sourcing standard replacement parts or require custom-made gaskets, MJ GASKET is a reliable partner for your engine sealing needs.

• Over 20 years of experience in gasket manufacturing for diesel and commercial engines
• Support for both standard parts and customized gasket solutions
• Stable supply, responsive lead time, and global shipping support

4. Ordering Process for Cummins 3649981 – Bulk Orders & MOQ Flexibility

MJ GASKET primarily serves B2B customers looking for reliable sourcing of aftermarket engine gaskets. For the Cummins QSK45/QSK60 3649981 Cylinder Head Gasket , we support both bulk orders and limited-quantity requests depending on stock availability and production schedules.

To place an order:

1. Contact us with the part number and required quantity.
2. Our sales team will confirm MOQ, availability, pricing, and estimated lead time.
3. Issue the purchase order and remit a 30% deposit to begin processing.
4. If a sample is required, we will provide it for confirmation before proceeding.
5. Once the sample is approved, the remaining 70% balance must be paid before mass production is dispatched.

Please note: MOQ requirements vary by product. For certain items, small-quantity orders may be accepted. Reach out to us to confirm the best option for your needs.

5. Worldwide Shipping from Taiwan – Lead Time & Delivery Options

MJ GASKET ships globally from Taiwan, offering flexible international shipping solutions based on your order size, weight, and urgency.

We support multiple shipping methods:

1. Sea Freight, Air Freight, or Courier Service – The best method is selected depending on shipment size and required lead time.
2. Use Your Appointed Forwarder – We are happy to work with your preferred shipping partner.
3. Ship via Our Cooperating Forwarder
4. Request Preferential Shipping Rates from Us – We can provide cost-effective shipping options through our logistics partners.

Lead times depend on product availability and order volume. Once your order is confirmed, our team will recommend the most efficient delivery method, confirm the estimated timeline, and keep you informed throughout the shipping process.

Whether shipping by carton or pallet, we ensure your gaskets are securely packed and prepared for safe international transport.