Product Specifications
| Parameter | Details |
|---|
| Part Name | Upper & Lower Gasket Kit |
| Part Number (OEM Reference) | 6547863, 6547864 |
| Brand Compatibility | Cummins |
| Engine Model Fitment | QSF3.8 |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Packaging | Original sealed box with anti-moisture barrier and protective foam |
Compatible Models
| Brand | Applicable Models |
|---|
| Cummins | QSF3.8 engine used in excavators, skid steers, telehandlers, and generator sets — including models integrated into CAT 301.8, 303.5, Volvo EC300D, Hyundai R300LC-9, and Doosan DX300L |
Tired of Engine Rebuild Delays? Get the Correct Upper & Lower Gasket Kit 6547863/6547864 for Cummins QSF3.8
Every hour your excavator sits idle during an engine rebuild costs hundreds — even thousands — of dollars in lost productivity and rental penalties. Counterfeit gasket kits fail under cylinder pressure, causing coolant-oil mixing, head warping, or catastrophic failure within 200 operating hours. OEM gasket sets for the QSF3.8 often require 3–4 weeks lead time and carry 40% price premiums over reliable aftermarket alternatives.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
This Cummins QSF3.8 gasket kit is manufactured in ISO 9001-certified facilities with full traceability, undergoes pre-shipment pressure and thermal cycling tests, and meets SAE J1922 and Cummins QSF3.8 service manual specifications. Designed for field mechanics performing scheduled engine overhauls on construction sites and fleet maintenance centers, it delivers consistent sealing performance across cylinder heads, intake manifolds, oil pans, and timing covers — critical for maintaining compression and preventing fluid cross-contamination.
Where This Part Works
This Cummins QSF3.8 engine rebuild gasket kit supports high-duty-cycle applications: earthmoving on quarry slopes, continuous operation in tropical port environments, and vibration-intensive demolition work. Under sustained loads up to 2,200 psi combustion pressure and ambient temperatures ranging from −25°C to +55°C, precise gasket thickness and surface finish prevent extrusion and creep — ensuring long-term integrity where standard aftermarket kits fail prematurely.
Engineering Details That Matter
The upper gasket (6547863) uses multi-layer steel (MLS) construction with Viton-coated embossed sealing beads to resist thermal expansion mismatch between aluminum heads and cast-iron blocks. The lower gasket (6547864) features nitrile-butadiene rubber (NBR) elastomer layers bonded to reinforced fiber substrate, rated for continuous exposure to engine oil, coolant, and diesel exhaust fluids. Both components maintain dimensional tolerance within ±0.05 mm — critical for proper bolt torque distribution and leak-free assembly. Surface hardness (Shore A 70±5) and compression set resistance (<15% after 72h at 120°C) are verified per ASTM D395. All materials comply with RoHS and REACH standards.
The Real Cost of Wrong Parts
A $28 counterfeit gasket kit may save $12 upfront — but leads to $2,400 in labor for a second teardown, $1,800 in damaged cylinder heads, and 3+ days of machine downtime. Industry data shows non-OEM-equivalent gaskets cause 68% of premature QSF3.8 rebuild failures within 500 hours. Our Cummins gasket set eliminates that risk: built to match original torque retention curves, thermal expansion coefficients, and fluid compatibility specs. Total cost of ownership drops by 31% over 2,000 operating hours when factoring labor, parts, and uptime — not just unit price.
Why Customers Trust XUNPO
Only ISO 9001-certified factories supply our gasket kits — each batch undergoes incoming material inspection for tensile strength, Shore hardness, and chemical composition. Every kit is 100% pressure-tested before shipment to confirm zero leakage at 3.5 bar static load. We provide 3–12 month warranty covering manufacturing defects — no questions asked. With 10 years exporting to 120+ countries, our technical team includes 5 certified Cummins Field Service Engineers who verify part fitment using official service manuals and OEM part cross-reference databases. Our Guangzhou warehouse holds 1,200+ engine gasket SKUs in stock — including this QSF3.8 upper lower gasket kit — enabling 2–5 working day dispatch on all in-stock orders.
Packaging & Shipping
- Individually sealed in moisture-barrier pouches with silica gel desiccant, then packed in rigid corrugated boxes with custom-cut EPE foam inserts
- In-stock items shipped within 2–5 working days after order confirmation
- Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — all with real-time tracking
- Full shipment visibility from Guangzhou warehouse to destination port or door
- MOQ: 1 piece — designed for urgent repair needs and small-batch rebuilds
Get Your Cummins QSF3.8 Engine Rebuild Gasket Kit Now
Your QSF3.8-powered machine isn’t generating revenue while waiting for parts. Send us the part number (6547863/6547864), your equipment model, and required quantity — we’ll email a competitive quote within 24 hours. First-time buyers can request a sample for physical verification before bulk ordering. Stock ships fast; downtime doesn’t wait.
Frequently Asked Questions
Q: Is this an original Cummins part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket gasket kit, manufactured in ISO 9001-certified facilities to meet Cummins QSF3.8 engineering specifications — not a recycled or counterfeit product.
Q: How do I confirm this fits my specific machine?
A: Provide your engine serial number, machine model, and application — our technical team verifies compatibility using Cummins service bulletins and cross-reference databases, and replies within 2 hours.
Q: What is your warranty policy on this gasket kit?
A: 3–12 month warranty against manufacturing defects. If failure occurs due to material or workmanship, we replace the kit at no cost — no restocking fee.
Q: What is the minimum order quantity?
A: 1 piece. We support urgent repairs, pilot rebuilds, and inventory testing with no volume requirement.
Q: How soon can I receive the parts after placing an order?
A: In-stock orders ship from our Guangzhou warehouse within 2–5 working days. Express delivery options available for time-critical jobs.
Q: Can I request a sample before placing a bulk order?
A: Yes — first-time customers may request one sample kit (6547863 + 6547864) for physical evaluation and installation testing.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 13316055942 | Email: talos@xunpojx.com
