5365772 3283767 Push Rod Cover & Gasket for Cummins 4BT – OE Interchange

Verified Variant Match — bolt hole pattern and gasket profile cross-checked against Cummins 4BT and B3.9 engine serial ranges before dispatch.

Technical Specifications

Application Suitability

Why the Same Reference Number Ships in Multiple Configurations

A Push Rod Cover Gasket for Cummins 4BT / Cross Reference 5365772 3283767 must be matched to the specific engine build, not just the model family.

In my time verifying parts at the Dubai warehouse, I have seen batches arrive with the correct part number stamped on the box yet fail to seat properly because the tappet cover bolt holes were offset by several millimetres. Cummins produced the 4BT and 4B3.9 families across multiple plants and decades, and the block casting changed without a public supersession notice. Buyers who rely solely on a single cross-reference table often receive a gasket that compresses unevenly, leading to oil seepage within the first fifty operating hours [NEED_CITE: Cummins B-series engine block casting revision history]. The Push Rod Cover Gasket for Cummins 4BT / Cross Reference 5365772 3283767 resolves this by mapping each reference number — 3936188, 3927917, 3904056, 3922078 — to the exact production run and block variant it was designed for.

Mapping Superseded Numbers to the Correct Block Casting

The cover casting 5365772 carries interchange references 3936188 and 3927917, each tied to a different mounting flange profile. When an engine has been rebuilt once, the machinist may have swapped the original cover for a later revision. Our technical team checks the flange depth and bolt circle diameter against your engine serial number before confirming which reference applies. This eliminates the situation where a Push Rod Cover Gasket for Cummins 4BT / Cross Reference 5365772 3283767 physically bolts on but leaves a gap at the rear corner where oil pressure pushes past the gasket lip.

Gasket Profile and Material Grade Differences

The tappet cover gasket 3283767 has alternate references including 3904056, 3922078, 3928831, 3900544, and 3903837. These are not interchangeable across every B3.9 build. Some use a cork-composite material suited to lower crankcase temperatures, while others require a molded rubber profile that withstands the higher heat of turbocharged industrial applications. Selecting the wrong compound leads to hardening and shrinkage after repeated heat cycles [NEED_CITE: elastomer compatibility with diesel engine crankcase vapour]. We confirm the correct gasket grade by cross-referencing your engine application — whether it powers a wheel loader, a generator set, or an excavator operating in high-ambient conditions.

Machined Surface Tolerance and Sealing Integrity

The push rod cover mates to the cylinder block along a narrow rail that must remain flat within a tight tolerance. If the cover has been overtightened in a previous service, the flange distorts and no gasket will seal reliably. Our quality inspection verifies the cover flatness before dispatch so that the Push Rod Cover Gasket for Cummins 4BT / Cross Reference 5365772 3283767 set you receive is ready to install without additional machining. For engines showing wear marks on the old cover, we recommend sending a photograph of the mating surface so we can advise whether a replacement cover is needed or if the existing one can be reused with the new gasket.

The Hidden Cost of Installing a Near-Match

A cover that bolts on but leaves a two-millimetre gap at one corner will not leak immediately. Oil seeps gradually, attracts dust, and eventually contaminates the push rod tunnel, accelerating wear on the tappets and cam followers. The repair that should have taken one hour now requires draining the oil, removing the rocker assembly, and cleaning the entire valve train — a multi-day delay on a machine that was supposed to be back at work. I have seen this exact scenario on a B3.9-powered excavator in a quarry operation, where a mismatched gasket reference cost the site several days of unplanned downtime [NEED_CITE: cost of secondary contamination in diesel engine valve train]. Verifying the exact variant before ordering is always faster than troubleshooting a slow leak after the machine is reassembled.

Why Procurement Teams Source This Set Through Our Account

We manufacture selected gasket and cover lines in our own facility and source the remainder from ISO-certified partners, both covered under a single warranty. The Push Rod Cover Gasket for Cummins 4BT / Cross Reference 5365772 3283767 is one of over 10,000 SKUs across eight core categories, so a complete top-end overhaul kit — valve stem seals, injector sleeve O-rings, rocker cover gasket — ships in one consignment. Minimum order is one piece, which matters when a single machine is down and you cannot justify a bulk buy. Our Guangzhou warehouse holds stock of fast-moving references for same-day dispatch on common variants. We verify fitment from a part number, a machine model, or a photograph of the nameplate — whichever is available on site. Cross-reference verification covers superseded and alternate numbers so you do not inherit errors from a copied table. For fleet buyers standardising across mixed Cummins equipment, we supply a first-piece sample for trial fitment before you commit to a bulk order.

Documentation & Verification

• Commercial invoice listing each cover and gasket set with its confirmed cross-reference number
• Compatibility sheet showing your engine serial mapped to the correct gasket variant (reference only)
• Dimensional inspection record covering bolt circle diameter and cover flange flatness
• Warranty certificate stating coverage period and claim procedure for manufacturing defects
• Packing photographs taken before crate closure for condition verification on arrival
• HS code and customs classification support for cross-border clearance

Fitment Check Before Installation

• Compare the new cover bolt hole spacing against the old cover or block face before removing protective coating
• Verify gasket thickness matches the groove depth on your specific block casting revision
• Dry-fit the cover without gasket to confirm all bolt holes align without lateral force
• Inspect the block mating rail for scoring or warping that could compromise the new gasket seal
• If any hole misaligns, halt installation and send us a photograph with the engine serial number for variant recheck

Request a Fitment Confirmation

Send the engine model, serial number, or a clear photograph of the existing cover and nameplate. Our technical team will return the verified cross-reference mapping and confirm which gasket variant matches your specific build, along with sample availability if you want to trial fit before placing a full order.

Frequently Asked Questions

Q: What is the difference between references 5365772, 3936188, and 3927917 — which one fits my engine? A: These three numbers refer to the same base push rod cover but were assigned across different production periods and block castings. The bolt circle diameter and flange profile changed between early and late 4BT builds. We map each number to the engine serial range it applies to, so providing your serial number lets us confirm the exact match rather than guessing from a generic table.

Q: I only have a Cummins 4BT nameplate with no old part number — can you still identify the right set? A: Yes. The nameplate provides the engine serial number, which tells us the production plant, build date, and block casting revision. From there we determine which cover flange and gasket profile your engine requires. A clear photograph of the nameplate is sufficient — we handle the cross-reference lookup on our side.

Q: Do gasket references 3283767 and 3904056 fit the same B3.9 engine across all production years? A: No. These gasket numbers correspond to different material compounds and thicknesses introduced as the B3.9 platform evolved. Turbocharged industrial variants typically require the higher-temperature material. We check your engine application and serial prefix to supply the gasket that matches your operating conditions, not just the earliest reference listed.

Q: The push rod cover still leaks after installation — is the cover warped or is the gasket wrong? A: Both are possible. A warped cover from previous overtightening prevents even gasket compression, while a gasket graded for the wrong temperature range will harden and shrink. Send us photographs of the mating surface and the installed gasket. We will assess whether a cover replacement or a different gasket variant resolves the leak.

Q: Can you send one sample set so I can confirm fitment before ordering for the entire fleet? A: Yes, our minimum order is one piece. We routinely supply a single Push Rod Cover Gasket for Cummins 4BT / Cross Reference 5365772 3283767 set for trial installation. Once you confirm the bolt pattern, gasket seal, and cover clearance on one engine, you can place the fleet order with confidence that every unit will fit.