Crankshaft 23111-42002 for Hyundai D4BB 2.5L. Fits Porter H100, Grace. Forged 42CrMo steel resists fillet radius cracking. OEM and aftermarket options.
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High-durability forged steel crankshaft for Hyundai D4BB and Mitsubishi 4D56 engines. Manufactured from 42CrMo alloy steel, induction hardened to HRC 52-58, with Ra 0.2 polished journals to solve fillet radius cracking. OEM: 23111-42002 | Cross ref: MD187921.
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The Hyundai D4BB crankshaft (OEM 23111-42002) represents a critical automotive engine core part engineered to sustain the heavy cyclic loads of light commercial diesel vehicles. Often shared with the legendary Mitsubishi 4D56 powertrain, this engine crank is a direct fit for the Hyundai Porter H100, Grace Van, and Libero pickup trucks. Over thousands of operating hours, standard cast iron shafts are prone to catastrophic failure points such as journal surface galling and fillet radius cracking. To resolve these vulnerabilities, Ruich Value produces this heavy-duty variant from premium 42CrMo high-strength forged steel, utilizing specialized dynamic balancing to minimize torsional vibrations.
Our forging process refines the steel’s grain structure, enhancing fatigue resistance under high torque conditions. Every crankshaft journal undergoes deep induction hardening to achieve HRC 52-58 surface hardness, followed by micro-grinding to a surface finish of Ra 0.2 microns. This level of finish reduces friction at the main and connecting rod bearings, maintaining optimal oil pressure and preventing premature spun bearings. As a specialized manufacturer, we serve fleet owners, machine shops, and engine rebuilders worldwide with high-precision shafts that restore factory compression and operational reliability without the premium OEM cost.
| Parameter | Value |
|---|---|
| Engine Model Compatibility | Hyundai D4BB / D4BA / D4BF / D4BH & Mitsubishi 4D56 (8V) |
| Primary OEM Number | 23111-42002 |
| Cross-Reference Numbers | MD187921, MD102601, 23111-42901, 2311142002, ME102601 |
| Metallurgical Material | 42CrMo High-Strength Forged Steel |
| Surface Hardness Profile | Induction Hardened (HRC 52-58) |
| Journal Surface Polish | Ra 0.2 Microns Precision Ground |
| Cylinder Configuration | 4 Cylinders In-Line |
| Main Journal Diameter | 66.00 mm (65.98 – 66.00 mm) |
| Connecting Rod Journal Dia | 53.00 mm (52.98 – 53.00 mm) |
| Piston Stroke Length | 95.00 mm (Compatible with 95 mm stroke variants) |
| Flywheel Mounting Pattern | 8-Bolt Rear Flange Design |
| Balancing Specification | Dynamic Computer Balanced with Counterweights |
Our comprehensive Hyundai engine catalog covers a full range of heavy-duty rotating components from the classic D4B diesel series to the newer D4CB and G4KC configurations. Auto parts distributors and professional workshops can explore our whole Hyundai Categories to discover direct-fit replacement crankshafts, camshafts, and cylinder heads designed for light-duty commercial vehicles.
| Primary Part Number | Cross Ref Part Numbers | Compatible Engine Model | Compatible Machine Model |
|---|---|---|---|
| 23111-42002 | MD187921, MD102601, 2311142002 | D4BB (Compatible with 4D56) | Hyundai Porter H100, Grace |
| 23111-42011 | MD374408, 2311142910, 2311142011 | D4BH (Compatible with 4D56T) | Hyundai Starex, Libero |
| 23111-4A010 | 231114A000, 231114A010 | D4CB (A-Engine) | Hyundai H1, Starex, Kia Sorento |
| 23111-45500 | ME013668, ME136680, 2311145500 | D4DB (Compatible with 4D34) | Hyundai County, Mighty |
| 23111-27000 | D4EA, 2311127000 | D4EA (D-Engine) | Hyundai Santa Fe, Tucson |
| 23111-2G000 | 231112G010, 4B12, 231112G000 | G4KC (Compatible with 4B12) | Hyundai Sonata, Santa Fe |
| 23111-25220 | MD191302, G4JS, 4G64 | G4JS (Compatible with 4G64) | Hyundai Santa Fe, Sonata |
| 23111-45000 | D4AE, D4AF, 4D31 | D4AE / D4AF (Compatible with 4D31) | Hyundai Mighty, Chorus |
| Make | Machine Model | Year Range | Engine | Application |
|---|---|---|---|---|
| Hyundai | Porter H100 Minibus / Truck | 1993–2004 | D4BB 2.5D / 2.6D | Light Commercial Vehicle |
| Hyundai | Grace Van / Minibus | 1993–2003 | D4BB / D4BA | Passenger Transportation / Cargo Van |
| Hyundai | Libero Pickup / Starex | 1997–2007 | D4BB / D4BH | Light Utility Commercial Fleet |
| Mitsubishi | L300 Van / Express | 1990–2013 | 4D56 (8V) | Urban Courier Delivery |
| Mitsubishi | Pajero SUV / Shogun | 1991–2001 | 4D56T (8V) | Off-Road 4WD / Utility Transport |
| Mitsubishi | Triton Pick-up / L200 | 1992–2006 | 4D56 (8V) | Agricultural & Fleet Service Vehicle |
Flywheel patterns represent the most critical compatibility hurdle for D4B series engines. The 23111-42002 standard utilizes an 8-bolt pattern on the rear mounting flange. However, early naturally aspirated D4BB or older Mitsubishi 4D56 blocks occasionally featured a 6-bolt pattern. Rebuilders must check the rear flange of their original shaft prior to assembly. Providing your vehicle’s VIN or the factory engine serial number to our technical department ensures 100% fitment before dispatch, avoiding costly return logistics and fleet downtime.
Fillet radius cracking and journal scoring are typically driven by torsional vibration and oil contamination. In heavy-duty logistics platforms like the Porter H100, extended oil drain intervals cause oil film degradation, leading to metal-on-metal contact at the main bearings. This results in journal surface galling. Furthermore, torsional stress on the crank’s journals induces fatigue cracks starting at the fillet radius. Our 42CrMo forged steel crankshafts feature induction-hardened journals with a surface hardness of HRC 52-58 and precision fillet rolling to resist fatigue and prevent catastrophic snapping under heavy payloads.
When installing the 23111-42002 crankshaft on your D4BB engine block, clean all oil passages thoroughly. Main bearing cap bolts must be tightened in a central-outward sequence. First, torque all main bolts to 30 ft-lb, then advance them to a final specification of 54-58 ft-lb (75-80 Nm). Lubricate the journals with high-quality assembly lube to prevent dry-start scoring. Always replace the crankshaft main bearings and thrust washers during a rebuild to ensure correct axial end play of 0.05 – 0.25 mm.
Yes, the Hyundai 23111-42002 crankshaft is highly interchangeable with the Mitsubishi 4D56 (8V) engine. Hyundai’s D4B series (D4BA, D4BB, D4BF, D4BH) is structurally licensed from the Mitsubishi Astron engine family. This shaft directly replaces Mitsubishi part numbers MD187921 and MD102601, making it compatible with Mitsubishi L300 and Pajero applications. However, newer 16-valve Mitsubishi 4D56U engines (with a 95 mm stroke and 57 mm rod journals) require different crankshafts (OEM 1100A135), so older 8V shafts will not fit.
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