Hunan Chengzhai Machinery Equipment Co., Ltd.
                                                                                                           
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DEUTZ MWM 12420021 (Crankshaft Thrust Washer, STD)

Price Negotiable
Price: Call for discussion
MOQ: 1
Delivery Time: 15days
Brand: MWM DEUTZ
Product Description
12420021 is a standard size crankshaft thrust washer for DEUTZ MWM 620 series engines. It limits the axial movement of the crankshaft and is used together with main bearings 12420020 / 12420022.

1. Basic Information

  • Part Number: 12420021 (OEM original part, standard thickness)
  • Type: Thrust Washer (2 semi-circular pieces per set)
  • Applicable Models: MWM TBG620 V12/V16/V20 and TBD620 series gas & diesel engines
  • Material: Steel backing with babbitt alloy coating (same as main bearings), featuring excellent wear resistance and impact resistance
  • Function: Restrict crankshaft axial play, bear axial thrust and keep the crankshaft in stable position
  • Installation Position: Installed on both sides of the 4th main bearing, one piece on the top and one on the bottom
  • Original Reference Price (2026): Approximately €85–95 per set (exclusive of tax)
  • Related Parts:
    • 12420020 / 12420022: Matching main bearings
    • 12420024: Connecting rod bearing

2. Technical Parameters & Installation

  • Standard Axial Clearance: 0.10–0.20 mm. Replace the washer if the clearance exceeds the specified range.
  • Installation Direction: Place the grooved side against the thrust surface of the crankshaft, and the plain side against the cylinder block. Keep the locating tabs facing outwards.
  • Common Failures: Alloy layer wear, peeling and ablation, which will cause excessive crankshaft axial movement, abnormal noise and severe vibration.
  • Overhaul Interval: Replace together with main bearings and connecting rod bearings every 8000–10000 operating hours.

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Hunan Chengzhai Machinery Equipment Co., Ltd.
Location Changsha Avenue, Yuhua District, Changsha, Hunan, China (Changsha) ASEAN Economic and Trade Cooperation Headquarters Base 1209
Contact Person sunny wen

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