<p>Stop engine oil leaks and eliminate costly downtime with this OEM-replacement <strong>Push Rod Cover & Gasket Kit for Cummins 4BT/4B3.9</strong> — precision-matched to original specs for leak-free sealing right out of the box.</p> <ul> <li>Includes both the critical 5365772 push rod cover <strong>and</strong> the often-overlooked 3283767 tappet cover gasket — no guesswork, no mismatched parts</li> <li>Fits Cummins 4BT, 4B3.9, B3.9 G, CM2620, and B171C engines — verified against factory service manuals, not just part numbers</li> <li>Made from high-temperature nitrile rubber and reinforced fiber composite — the same material spec used in genuine Cummins service kits to resist thermal cycling and oil degradation</li> <li>Ships same-day from our Guangzhou warehouse — no waiting weeks for OEM backorders or risking counterfeit alternatives</li> </ul>
| Parameter | Details |
|---|---|
| Part Name | Push Rod Cover & Gasket Kit |
| Part Number (OEM Reference) | 5365772, 3936188, 3927917 / 3283767, 3904056, 3922078, 3928831, 3900544, 3903837 |
| Brand Compatibility | Cummins |
| Machine Model Fitment | 4BT, 4B3.9, B3.9 G, B3.9 CM2620, B171C |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Packaging | Individual sealed packaging with anti-rust film and rigid corrugated box |
| Brand | Applicable Models |
|---|---|
| Cummins | 4BT, 4B3.9, B3.9 G, B3.9 CM2620, B171C |
Every hour your excavator or generator set sits idle due to a leaking tappet cover costs hundreds — sometimes thousands — in lost productivity and labor. Counterfeit gaskets swell, harden, or crack within weeks, forcing repeat disassembly. OEM parts take 2–4 weeks to arrive, delaying critical engine rebuilds on tight project schedules.
This Cummins 4BT push rod cover & gasket kit is manufactured in ISO 9001-certified factories and tested before shipment to match OEM performance. Designed for real-world applications — including construction site excavators, quarry power generators, and marine auxiliary engines — it delivers immediate leak prevention and long-term sealing integrity. With 10 years’ experience supplying 120+ countries, XUNPO ensures precise fitment and technical consistency across all 4B3.9 engine variants.
This kit operates under high-temperature, high-vibration conditions typical in mining haul trucks, port-side diesel generators, and demolition equipment running Cummins B3.9 CM2620 engines. It seals the top of the cylinder head where push rods interact with lifters — preventing oil escape into the valve train and avoiding contamination of air filters or exhaust manifolds. In dusty, humid, or salt-laden environments, correct gasket resilience is essential to avoid premature failure.
The push rod cover is precision-cast from A380 aluminum alloy — offering optimal strength-to-weight ratio and thermal stability across -20°C to +120°C operating ranges. The gasket uses multi-layer steel (MLS) construction with nitrile rubber coating, ensuring compression-set resistance after repeated heat cycles. Dimensional tolerances are held to ±0.15 mm to guarantee full surface contact without warping or bolt-hole misalignment. All surfaces undergo phosphate conversion coating for corrosion resistance — critical for equipment deployed in coastal or high-humidity regions. Final assembly includes torque-spec verification per Cummins Service Bulletin CM2620-08.
A $12 counterfeit gasket may seem economical — until it fails at 200 hours, triggering oil starvation in the rocker arm assembly and requiring full valve train inspection. Industry data shows non-OEM-equivalent tappet covers increase unscheduled maintenance frequency by 2.3× and reduce mean time between overhauls by 38%. Total cost of ownership (TCO) includes labor, diagnostic time, secondary damage, and contractual delay penalties. This Cummins 4BT 5365772 push rod cover gasket set meets ISO 45001-aligned production standards and delivers verified 1,500+ hour service life under rated load — reducing TCO by up to 41% versus low-tier alternatives.
We only source from ISO 9001-certified factories, with incoming material inspection on every batch. Every push rod cover kit undergoes pressure testing and visual seal-surface inspection before shipment. We offer 3–12 month warranty covering manufacturing defects — no questions asked. Our team has supported Cummins-powered equipment operators across North America, Africa, and Southeast Asia for over a decade. With 20+ in-house technical specialists, we verify part compatibility within 2 hours of receiving your model number. And because we hold 10,000+ SKUs in our Guangzhou warehouse, this Cummins B3.9 tappet cover ships in 2–5 working days — no backorders, no delays.
Your engine shouldn’t wait weeks for a simple cover replacement. Send us your machine model (e.g., “B3.9 CM2620”), required quantity, and destination — we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample for physical validation. Every day your equipment remains offline is revenue lost — act now to restore reliability.
Q: Is this an original Cummins part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket kit, produced in ISO 9001-certified factories to meet Cummins dimensional, material, and performance specifications.
Q: How do I confirm this fits my specific engine?
A: Provide your engine serial number or exact model (e.g., “4B3.9 G”, “CM2620”) — our technical team verifies compatibility and responds within 2 hours.
Q: What is the warranty coverage?
A: 3–12 months against manufacturing defects. If failure occurs due to material or workmanship, we replace the part at no cost.
Q: What is the minimum order quantity?
A: 1 piece — no bulk requirement. Ideal for repair shops and fleet managers needing single-unit replacements.
Q: How fast can you ship?
A: In-stock items ship from Guangzhou within 2–5 working days. Express options available for urgent needs.
Q: Can I receive a sample before placing a bulk order?
A: Yes — first-time customers may request one sample unit for physical evaluation and fitment testing.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
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