# MAIN BEARING SET- S2 (0.50) - 2102042033D

**MAIN BEARING 0.50 -SET OF 8PCS - HYUNDAI D4BB ENGINE**

Protect crankshaft main journals, maintain stable hydrodynamic oil pressure, and eliminate lower-end block vibration with the Engine Crankshaft Main Bearing Set — 0.50 mm Undersize (Set of 8 Pieces / Part No. D4BB-MB-050), available now at Royal Spare Parts Co. W.L.L. Qatar.

Main bearings provide the primary low-friction rotational support for the engine crankshaft inside the cylinder block journal beds. During major diesel engine reconditioning where the crankshaft main journals have been precision-ground down by 0.50 mm (0.020 in) to clean up deep scoring, heat discoloration, or journals wear, installing matched 0.50 mm undersize bearing shells is critical. Operating under heavy commercial payloads and continuous high thermal stress can cause premature bearing surface fatigue if oil film clearance is incorrect. Installing a precision-machined 0.50 mm main bearing set restores exact oil film thickness, prevents crank journal wear, preserves oil pressure throughout the engine block, and ensures maximum durability for heavy-duty commercial service.

**Why Choose Royal Spare Parts Co. W.L.L.?**

At Royal Spare Parts Co. W.L.L. (Industrial Area, Doha), we stock comprehensive ranges of internal engine rebuild components, crankshaft bearings, connecting rod shell sets, cylinder liners, and pistons for commercial light trucks, vans, and diesel power units across Qatar. Visit our Industrial Area counter for direct pickup or contact our technical sales team for fast express delivery across all municipalities in Qatar.

**Reference Numbers:**  
2102042902

## Details

- **Price:** 120.0 QAR
- **Vendor:** GENUINE

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 120.00 QAR | In stock |

## Images

- MAIN BEARING SET- S2 (0.50) - 2102042033D

## Additional Information

- **Main Category:** Bus HVAC
- **Sub Category :** Hyundai D4BB Engine Parts

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> Source: [Royal Spare Parts CO. W.L.L](https://royalspareparts.store/products/main-bearing-set-s2-0-50-2102042033d)
> Updated: 2026-10-22