
Product Introduction
The X12 connecting rod bearing 4089405 is designed for Cummins X12 engine platforms widely used in FOTON AUMAN GTL and EST heavy-duty trucks. It is manufactured according to OEM standards to ensure stable crankshaft operation, improved lubrication efficiency, and reliable engine performance under high-load diesel engine conditions.
The Cummins X12 engine is a modern high-efficiency 11–12L class heavy-duty diesel platform widely used in long-haul logistics and highway freight applications. This connecting rod bearing plays a key role in supporting the crankshaft and reducing friction between the connecting rod and journal under continuous high-load operation.
Manufactured with high-strength steel backing and precision anti-friction alloy coating, this bearing ensures excellent wear resistance, heat resistance, and stable oil film performance. It helps extend engine life and maintain reliable operation in demanding environments such as logistics, mining, and long-distance transportation.

Technical Specifications
| Item | Specification | Item | Specification |
| Product Name | Connecting Rod Bearing | Model | X12 |
| Part Number | 4089405 | Engine Platform | Cummins X12 |
| Vehicle Application | FOTON AUMAN GTL / EST | Material | Steel Back + Alloy Coating |
| Type | Engine Bearing | Fuel Type | Diesel |
| Condition | New | OEM Standard | Yes |
| Quality Test | 100% Tested | Origin | China |
| Packaging | Export Standard Packaging | Availability | In Stock / On Request |
Vehicle Fitment
| Vehicle Brand | Compatible Models |
| FOTON AUMAN | GTL, EST, Galaxy |
| Cummins Engine Platform | X12 Series |
| DONGFENG | KL, KR |
| SINOTRUK | HOWO T7H |
| SHACMAN | X3000, X5000 |
Payment & Shipping
| Category | Options |
| Payment Methods | T/T, PayPal, Western Union, MoneyGram, Visa, MasterCard, L/C, Trade Assurance |
| Express Shipping | DHL, FedEx, UPS, TNT |
| Freight Shipping | Air Freight, Sea Freight, Railway Freight |
| Delivery Time | 3–7 Days / 7–15 Days / 20–45 Days |
| Shipping Coverage | Worldwide |
| Trade Terms | EXW, FOB, CFR, CIF, DDP |
Related Products Categories
| Section/System | Common Spare Parts |
| Cylinder Block & Cylinder Head | Cylinder Block, Cylinder Head, Cylinder Liner, Piston, Piston Ring, Cylinder Head Gasket |
| Crankshaft System | Crankshaft, Connecting Rod, Main Bearing, Connecting Rod Bearing, Thrust Washer |
| Valve Train | Intake Valve, Exhaust Valve, Camshaft, Rocker Arm, Valve Spring |
| Turbocharger System | Turbocharger, Turbo Repair Kit, Intercooler, Intake Pipe |
| Fuel System | Fuel Injector, Injector Nozzle, Fuel Pump, Fuel Filter |
| Cooling System | Water Pump, Thermostat, Radiator, Expansion Tank |
| Lubrication System | Oil Pump, Oil Filter, Oil Cooler, Oil Pan |
| Intake & Exhaust System | Air Filter, Air Cleaner Assembly, Exhaust Pipe, Muffler, DPF, SCR |
| Engine Electrical Parts | Starter Motor, Alternator, Sensors, Wiring Harness |
Transmission & Drivetrain Parts
| Section/System | Common Spare Parts |
| Clutch System | Clutch Disc, Pressure Plate, Release Bearing, Clutch Master Cylinder, Clutch Booster |
| Transmission System | Gearbox Assembly, Synchronizer, Gear Set, Bearing, Oil Seal, Shift Fork |
| PTO System | PTO Assembly, PTO Gear, PTO Pump, PTO Seal |
| Driveshaft System | Driveshaft Assembly, Universal Joint, Center Bearing, Slip Yoke |
| Differential System | Differential Assembly, Crown Wheel & Pinion, Differential Bearing, Repair Kit |
| Section/System | Common Spare Parts |
| Front Axle | Kingpin Kit, Steering Knuckle, Ball Joint, Tie Rod, Wheel Bearing |
| Rear Drive Axle | Axle Housing, Half Shaft, Differential Housing, Hub Bearing |
| Suspension System | Leaf Spring, Air Spring, Shock Absorber, Equalizer Beam, U-Bolt |
| Steering System | Steering Gearbox, Power Steering Pump, Drag Link, Steering Shaft |
| Brake System | Brake Drum, Brake Disc, Brake Pad, Brake Chamber, Slack Adjuster |
| Wheel Hub System | Wheel Hub, Wheel Bearing, Oil Seal, Wheel Bolt, Wheel Nut |
Cabin & Body Parts
| Section/System | Common Spare Parts |
| Cabin Assembly | Cabin Shell, Cabin Suspension, Cabin Lock, Cabin Mount |
| Dashboard System | Instrument Cluster, Dashboard Panel, Switch Assembly |
| Door System | Door Assembly, Door Lock, Door Handle, Window Regulator |
| Seat System | Driver Seat, Passenger Seat, Seat Shock Absorber |
| Air Conditioning System | AC Compressor, Condenser, Evaporator, Blower Motor |
| Electrical System | Headlamp, Tail Lamp, Fog Lamp, Wiring Harness, Relay |
| Mirror System | Rear View Mirror, Mirror Arm, Mirror Cover |
| Body Exterior Parts | Bumper, Grille, Fender, Mudguard, Step Panel |
