Product Introduction: A precision-engineered bearing bush made of high-strength aluminum alloy with a lead-tin overlay for enhanced wear resistance. It features a lubrication oil hole and groove design, with a split structure for easy installation on the crankshaft or connecting rod.

Product Function: Provides a low-friction surface between the crankshaft journal and connecting rod, reducing wear and absorbing shock loads. The oil hole and groove ensure continuous lubrication, preventing metal-to-metal contact and extending the service life of the engine.

Engine Bearing Bush 3820566 for Cummins M11/L10 – Premium OEM-Grade Replacement

Built to endure extreme thermal loads and crankshaft pressures, this Engine Bearing Bush 3820566 delivers the precise oil-film tolerance your Cummins M11 and L10 engines demand. Every unit ships from our factory with dimensional accuracy verified to ±0.005 mm, giving your fleet the reliability it deserves while keeping your procurement cost firmly under control.

Why This Engine Bearing Bush 3820566 Outperforms Generic Alternatives

A camshaft bearing bush may look like a simple sleeve, but inside a Cummins M11 or L10 block it shoulders thousands of RPM cycles per minute. Our 3820566 bearing bush is engineered to match OEM blueprints so closely that your technicians won’t feel the difference during installation — only during service life, when uptime speaks for itself.

• Tri-Metal Construction — Steel backing, copper-lead intermediate layer, and tin-aluminum overlay work together to resist fatigue at operating temperatures up to 150 °C.
• Precision Bore Finish — Surface roughness held below Ra 0.4 µm ensures rapid hydrodynamic film formation on startup.
• Optimized Oil Grooves — CNC-machined lubrication channels distribute oil evenly, reducing localized hot spots by up to 30 % compared to poorly finished alternatives.
• Crush Height Consistency — Controlled to ±0.01 mm so each bush seats firmly without fretting or spin in the bore.
• Corrosion-Resistant Overlay — Tin-based flash plating protects against acidic combustion by-products in aging oil.

The result: longer bearing service intervals, lower unplanned downtime, and fewer warranty headaches for your customers.

Technical Specifications — Engine Bearing Bush 3820566

Application Scenarios — Where the 3820566 Bearing Bush Works Hardest

The Cummins M11 and L10 power a broad spectrum of heavy-duty equipment worldwide. Here are the real-world environments where our bearing bush proves its value daily:

• Long-Haul Trucking — Freightliner FLD120, Kenworth T600, and Peterbilt 379 tractors racking up 150,000+ km per year rely on consistent camshaft support to maintain valve timing accuracy.
• Construction & Mining — Wheel loaders, excavators, and generators operating in dusty, high-vibration sites need bearing bushes that resist fretting and contamination ingress.
• Marine Propulsion — Vessel auxiliary engines running Cummins M11 marine variants demand corrosion-resistant bearing materials that tolerate humid, salt-laden crankcase environments.
• Power Generation — Standby and prime-power gensets with M11 engines experience repeated start-stop thermal cycling — exactly the duty our tri-metal construction is designed to absorb.
• Bus & Coach Fleets — Urban transit buses with L10 engines operating in stop-start city traffic put high cyclic loads on camshaft bearings thousands of times per shift.

OEM/ODM Capability — Your Brand, Our Quality

Whether you distribute under your own brand or supply engine rebuilders who demand neutrally packed components, METTLEAD adapts to your market needs:

• White-Label Packaging — We print your logo, part number, and barcode on individual boxes at no additional tooling charge above 500 sets.
• Custom Packaging Configurations — Need each bearing bush wrapped separately with anti-corrosion VCI paper? No problem. Specify your pack-out and we match it.
• Private Labeling on Parts — Laser-engraved or ink-stamped brand markings on the steel backing are available for orders above 1,000 sets.
• Strict Quality Gate — Every production batch passes CMM dimensional inspection, hardness testing, and visual defect audit before dispatch. Inspection reports ship with your goods on request.

Explore our full range of Cummins Engine Parts to bundle bearing bushes with liners, piston kits, and gaskets in a single shipment.

Client Case Study — Bearing Bush 3820566 in Bulk Fleet Overhaul

In Q1 2024, a fleet maintenance company based in Lagos, Nigeria approached METTLEAD needing 600 sets of Engine Bearing Bush 3820566 to service 120 Cummins M11-powered trucks ahead of rainy season. Their previous supplier had delivered bushes with inconsistent wall thickness, causing premature failures within 40,000 km.

We shipped the full order within 12 working days, each set accompanied by a CMM inspection certificate. Six months and over 8 million combined fleet kilometers later, the client reported zero camshaft bearing failures — a result that earned us a repeat order of 800 sets plus a new inquiry for main bearing shells.

“We used to replace these bushes every other service interval. With METTLEAD’s 3820566, our trucks now run two full intervals without a single cam knock. That alone cut our bearing spend in half.” — Procurement Manager, West Africa Fleet Services Ltd.

Frequently Asked Questions — Engine Bearing Bush 3820566

What engines does bearing bush 3820566 fit?

The 3820566 is a camshaft bearing bush set designed specifically for the Cummins M11 (10.8 L) and L10 (10.0 L) inline-six diesel engines. It cross-references with part numbers 3028269 and 3034093, covering early and late production blocks.

Is this bearing bush available in undersize or oversize variants?

Our standard production is STD (standard size). If your block has been line-bored oversize, contact our engineering team with bore measurements and we can confirm whether a custom-machined option is feasible for your order quantity.

How do I verify the correct oil clearance after installation?

Use Plastigage film placed axially on the journal. Tighten the cap to spec, remove, and compare the film width against the scale printed on the package. For the 3820566, target installed clearance is 0.025–0.076 mm. Values outside this range indicate bore or journal wear requiring machining.

What causes premature bearing bush failure in Cummins M11 engines?

The three most common failure drivers are: (1) contaminated or degraded engine oil that breaks down the hydrodynamic film, (2) incorrect installation tools that distort the bush during press-fit, and (3) out-of-spec cam journal surface finish that accelerates overlay wear. Our bushes meet OEM hardness and tolerance specs, so failures are almost always traceable to installation or lubrication issues.

Can I order a sample before committing to a large quantity?

Yes. We encourage buyers to evaluate fit and finish before bulk ordering. Sample lead time is typically 3–5 working days, and the sample cost is fully deductible from your first production order.

Does the 3820566 bearing bush require a break-in period?

After installation, run the engine at idle for 10–15 minutes to allow the overlay to conform to the journal micro-geometry. Avoid sustained high RPM for the first 30 minutes. This gentle break-in establishes an optimal oil-film surface and extends bearing life significantly.

Ready to Secure Your Supply of Engine Bearing Bush 3820566?

Stop losing uptime — and margin — to inconsistent aftermarket bearings. METTLEAD delivers factory-direct quality at pricing that protects your bottom line, with lead times built for the pace of real fleet maintenance schedules.

• ✔ Competitive factory-direct pricing — no middleman markup
• ✔ MOQ from 10 sets — flexible for trial orders
• ✔ Full inspection documentation on request
• ✔ Global shipping via sea, air, or express courier

Get your personalized quote today. Send us your required quantity, desired delivery date, and shipping destination — our team typically responds within 12 hours.

👉 Contact METTLEAD Now for a Fast Quote