Upper & Lower Gasket Kit 6547863/6547864 for Cummins QSF3.8 Engine Rebuild

Product Specifications

Compatible Models

Tired of Engine Rebuild Delays? Get the Correct Upper & Lower Gasket Kit 6547863/6547864 for Cummins QSF3.8

Every hour your QSF3.8-powered machine sits idle during an engine rebuild costs hundreds in lost productivity — especially on tight infrastructure or mining schedules. Many buyers receive mismatched gaskets that leak under pressure, causing repeat disassembly. Others wait 3–4 weeks for OEM kits, while counterfeit sets fail within 200 operating hours.

OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse

This Cummins QSF3.8 gasket kit is manufactured in ISO 9001-certified facilities and undergoes full functional validation before shipment — including compression resistance testing at 12 MPa and thermal cycling between -40°C and +150°C. Built for real-world excavator and loader engine rebuilds, it delivers consistent sealing performance across cylinder head, oil pan, timing cover, and valve cover interfaces. With 10,000+ SKUs in stock — including all major Cummins gasket sets — we ship verified parts within 2–5 working days.

Where This Part Works

This Cummins QSF3.8 engine rebuild gasket kit is field-proven in high-vibration, high-temperature environments: quarry excavators running 18-hour shifts, port-side telehandlers exposed to salt air, and municipal backhoe loaders operating in sub-zero winter conditions. Proper gasket integrity prevents oil starvation in the camshaft drive train and maintains combustion chamber pressure — critical when engines operate under continuous load at 2,200 RPM.

Engineering Details That Matter

Each gasket in this set uses multi-layer steel (MLS) construction with Viton-coated elastomer beads for dynamic sealing under thermal expansion. The cylinder head gasket features 3-layer stainless steel with laser-cut embossments ensuring ±0.02 mm surface conformity to OEM-machined surfaces. Oil pan gaskets incorporate nitrile rubber (NBR) with 70 Shore A hardness — resistant to diesel fuel, engine oil, and coolant mixtures. All components meet SAE J1964 and ISO 8536-3 dimensional tolerances, enabling direct bolt-on replacement without re-torquing sequences.

The Real Cost of Wrong Parts

A $28 counterfeit gasket kit may save $12 upfront — but leads to head gasket blowout within 150 hours, requiring full engine teardown, labor at $120/hour, and 3 days of downtime. In contrast, this Cummins gasket set maintains seal integrity beyond 1,200 hours under rated load, aligning with OEM service intervals. Total cost of ownership drops 37% over 2 years when factoring in reduced labor, no secondary failures, and zero unplanned shutdowns — validated by fleet operators across Southeast Asia and the Middle East.

Why Customers Trust XUNPO

Packaging & Shipping

• Individually sealed in anti-static, moisture-resistant pouches inside a rigid double-walled cardboard box with molded EPS foam inserts
• In-stock items ship within 2–5 working days after order confirmation
• Flexible logistics: DHL/FedEx express (3–5 days), air freight (7–10 days), or sea freight (25–35 days)
• Real-time tracking provided via email and WhatsApp upon dispatch
• MOQ is 1 piece — designed for urgent repair needs and sample verification

Get Your Cummins QSF3.8 Gasket Kit Now

Your excavator or loader can’t afford another week of downtime waiting for unreliable parts. Send us your machine model, current engine serial number (if available), and required quantity — we’ll reply with a formal quote within 24 hours. First-time customers may request one set as a test sample before bulk ordering. Every day delayed is revenue lost; every correct part installed is reliability restored.

Frequently Asked Questions