The 200V91606-0040 Bowl-shaped plug is a critical expansion (or freeze) plug used primarily in the engine block and cylinder heads of Sinotruk HOWO trucks. Its primary function is to seal the casting holes of the coolant or oil galleries, ensuring the system maintains internal pressure without seepage.
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| Part Name | Bowl-shaped Plug / Expansion Plug |
| OEM Part Number | 200V91606-0040 |
| Compatible Brand | Sinotruk HOWO (D12, WD615 Series Engine) |
| Material | Deep-drawn Cold Rolled Steel (Zinc Coated) |
| Shape | Concave Bowl / Dish Type |
| Resistance | High-temperature & Oil-corrosion Resistance |
| Fitment Type | Direct Replacement (Press-fit) |
| Application Area | Engine Block, Cylinder Head, or Transmission Case |
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