DEUTZ MWM TBG620 V16(6002) – 12300235 Exhaust Valve
12300235 is a dedicated exhaust valve for DEUTZ MWM 620 series engines. It is an essential component of the valve train and fits TBG620 V16(6002) gas engine.
1. Basic Information
- Part Number: 12300235 (OEM original part)
- Type: Exhaust Valve
- Applicable Models: MWM TBG620 V12/V16/V20 and TBD620 series gas & diesel engines
- Material: High-temperature and corrosion resistant alloy valve steel. The valve head and stem are surface reinforced to deliver outstanding resistance against high-temperature ablation and wear.
- Structure: Integral forging with precision ground valve stem
- Original Reference Price (2026): Approximately €45–51 per piece (exclusive of tax)
- Related Parts:
- 12300234: Intake Valve
- Valve seat insert, valve guide, valve spring and valve stem seal (matching components)
2. Functions & Features
It controls the exhaust stroke of the cylinder. It opens to discharge burnt exhaust gas and closes to seal the combustion chamber. The component withstands sustained ultra-high temperature and high-pressure gas impact, ideal for long-term continuous operation of the unit.
3. Common Failures & Replacement
- Common issues: Valve head ablation, wear, carbon buildup, valve stem scoring and sealing failure, which result in insufficient power, abnormal exhaust smoke and increased fuel consumption.
- Replacement Interval: Inspect and replace during major overhaul every 8000–10000 operating hours under normal working conditions.
4. Installation Instructions
- Thoroughly clean carbon deposits and debris on valves, valve seats and guides before installation.
- Check valve clearance. Standard exhaust valve clearance: 0.35–0.40 mm.
- Ensure the valve is fully seated with reliable sealing and no air leakage.
- Apply special lubricant during assembly to prevent valve stem sticking.