Matched Set Dispatch — Every connecting rod ships with verified dimensional data aligned to the specific D24 engine serial variant.
Technical Specifications
| Parameter |
Value |
| Part Number |
7031360 |
| Product Type |
Connecting Rod |
| Cross-Reference |
7031362, 7031361, 7031358, 7031359 (reference only) |
| Compatible Engine |
Doosan D24 |
| Machine Fitment |
Bobcat E32, E35, E42, E45, E50, E55, E57W, E85, E63, S450, S510, S550, S570, S590, S595, S630, S650, T450, T550, T590, T595, T630, T650, 5600, 5610, P185; Doosan & Daewoo compatible equipment |
| Condition |
New Aftermarket |
| Warranty |
3–12 months against manufacturing defects |
| MOQ |
1 piece |
| Manufacturing Standard |
ISO |
Application Suitability
| Engine System |
Related Components |
| Block & Internal Rotating Assembly |
Pistons, piston pins, piston rings, cylinder liners |
| Crankshaft & Bearing Group |
Con rod bearings (STD / oversize grades), main bearings, thrust washers |
| Lubrication & Oil Delivery |
Oil pump, con rod oil squirt nozzle (if equipped), oil filter |
| Gasket & Seal Set |
Con rod bolt seals, oil pan gasket, block-to-head gasket set |
Why Rebuilds Fail Before the First Oil Change
A connecting rod ordered without checking bearing clearance grade after a previous regrind is the most common cause of early big-end failure.
In my time handling warranty claims, the pattern was always the same: the crankshaft journal had been machined to an undersize during a prior overhaul, but the replacement connecting rod 7031360 was supplied with standard-thickness bearing shells. The clearance collapsed under thermal load, and the engine seized before the next scheduled service interval [NEED_CITE: con rod bearing clearance limits for compact diesel engines under continuous high-load duty]. This is not a material defect; it is a specification mismatch that no amount of quality inspection on the rod itself would catch. When the D24 engine in a Bobcat E50 or S590 is torn down for a second time, the cost of the downtime in a mining or contracting environment far outweighs the component cost. Verifying the engine serial number and the crankshaft regrind history before ordering Connecting Rod engine rebuild parts is the only way to prevent this cycle.
The D24 Rotating Assembly as a Matched System
This connecting rod does not function in isolation within the Doosan D24 block. Its big-end bore must be measured alongside the crankshaft journal diameter to calculate oil film clearance, and its small-end bushing must match the piston pin diameter for the specific engine serial variant. A Connecting Rod engine rebuild part installed with mismatched piston weight or pin offset will introduce secondary vibration that accelerates main bearing wear.
Superseded Numbers and Serial Variant Differences
The reference numbers 7031362, 7031361, 7031358, and 7031359 are all associated with this rod family, but they are not always interchangeable across every D24 build [NEED_CITE: engine serial break points for Bobcat Doosan Daewoo D24 connecting rod variants]. A rod pulled from an early-production D24 may differ in big-end bore diameter or bolt thread specification from a later build. Before confirming an order, the engine serial plate and any stamping on the original rod must be checked against the cross-reference sheet to eliminate variant error.
Dimensional Verification Before the Block Goes Back Together
The critical measurements on this connecting rod include the big-end bore with bearing shell installed, the small-end bushing inner diameter, and the center-to-center distance between the two bores. Bolt stretch measurement during torque-up replaces simple torque value as the accepted method for confirming clamp load on modern compact diesel con rod bolts [NEED_CITE: con rod bolt torque and stretch specifications for compact diesel engines]. If the crankshaft was previously reground, the oversize grade of the bearing shells must be selected to restore the oil clearance window, not to compensate for a rod that is out of round.
The Cost of Skipping Root Cause Analysis
Replacing a single failed connecting rod without diagnosing why it failed leads to predictable repeat failures. If the root cause was oil starvation from a blocked squirt nozzle or a failing oil pump, the new rod will experience the same bearing collapse. If the failure was caused by over-rev or hydraulic lock, adjacent rods may have bent slightly beyond the acceptable center-to-center distance tolerance. A teardown that only addresses the visible damage, without inspecting the full rotating assembly and lubrication circuit, is simply scheduling the next breakdown [NEED_CITE: diesel engine connecting rod failure root cause diagnosis procedures].
Why Source This Component Through XUNPO
Own production lines and qualified sourced supply operate under one account and one warranty structure, so whether this rod ships alone or as part of a full D24 overhaul kit, the quality terms remain consistent. Cross-reference verification covers all superseded and alternate numbers including 7031362 and 7031359, reducing the risk of ordering an incompatible variant. Minimum order is one piece, which matters when a single rod needs emergency replacement. The technical team can confirm bearing grade compatibility when the buyer provides the engine serial and crankshaft regrind history. Dimensional inspection records travel with every shipment, giving the rebuild shop data they can verify on the bench before assembly.
Documentation & Verification
- Commercial invoice and packing list matching the exact rod variant and bearing grade specified
- Cross-reference sheet listing 7031360, 7031362, 7031361, 7031358, 7031359 (for identification purposes)
- Dimensional inspection record covering big-end bore, small-end bore, and center distance
- Warranty terms sheet specifying coverage period and claim procedure
- Packing photographs showing rod condition and protection before crate closure
Installation & Rebuild Sequence
- Clean the rod big-end bore and cap thoroughly before fitting bearing shells; any residue alters clearance
- Fit bearing shells of the grade matching the crankshaft journal regrind, not standard by default
- Verify piston pin fit in the small-end bushing before assembling the piston-to-rod connection
- Torque con rod bolts using the stretch measurement method specified for the D24, not a generic value
- Rotate the crankshaft by hand after each rod is torqued to confirm no binding before proceeding
- After full assembly, prime the lubrication system before first start to avoid dry bearing contact
Preparing Your Inquiry
To confirm the correct connecting rod variant and bearing grade for your D24 rebuild, provide the engine serial number, any stamping found on the original rod, and the crankshaft regrind history if applicable. If the engine plate is unreadable, a photograph of the machine model plate and any visible casting numbers on the block will allow cross-reference verification. For overhaul kit requests, include the full engine serial so pistons, rings, bearings, and gaskets can be matched as one verified assembly.
Frequently Asked Questions
Q: How do I confirm which connecting rod variant fits my specific D24 engine serial?
A: Provide the engine serial number from the identification plate. The cross-reference database maps serial ranges to the correct rod variant, accounting for changes in big-end bore and bolt specification across D24 production runs. If the plate is missing, photographs of the original rod stamping and the machine model plate are usually sufficient to narrow the variant.
Q: My crankshaft was reground last rebuild — how do I select the right bearing grade?
A: The regrind oversize stamped on the crankshaft journal or noted in the previous rebuild record determines the bearing shell thickness needed to restore oil clearance. Supplying that oversize grade when ordering allows the correct bearing shells to be paired with the connecting rod, preventing the clearance collapse that causes premature big-end failure under load.
Q: Do the alternate numbers 7031362, 7031361, 7031358, and 7031359 all fit the same engine?
A: These numbers are associated with the same rod family but may correspond to different D24 serial ranges or build configurations. They are not universally interchangeable. Verification against your engine serial number is required to determine which specific reference number matches your application before placing an order.
Q: Should I replace all connecting rods as a matched set or only the failed one?
A: If the failure was caused by a system-wide issue such as oil starvation or over-rev, all rods should be inspected for bend and bore distortion. Replacing only the visibly damaged rod while leaving fatigued adjacent rods in the block risks sequential failure. For a clean single-cylinder repair with confirmed root cause, a single replacement is acceptable.
Q: Can I get a complete overhaul kit matched to this connecting rod?
A: Yes. A matched overhaul kit includes pistons, rings, piston pins, con rod and main bearings, and a full gasket set, all selected for the specific D24 engine serial variant. Providing the engine serial number ensures every component in the kit is dimensionally compatible, eliminating the risk of mismatched tolerances during assembly.
