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8980215910 MYY6S MYY5T Gearbox Shift Control Box 8982409932 MYY Transmission Top Upper Cover For ISUZU M100 M600 NLR NMR NPR NQR
Direct replacement shift control box (transmission top upper cover assembly) for Isuzu M100, 600, NLR, NMR, NPR, and NQR trucks with MYY5T or MYY6S manual transmissions OE cross reference: 8980215910, 8980215911, 8982409930, 8982409931, 8982409932, 8982409933, 8-98021591-0, 8-98021591-1, 8-98240993-0, 8-98240993-1, 8-98240993-2, 8-98240993-3 Complete upper cover assembly – Houses shift forks, rails, and selector mechanism Choose from 3 quality levels – Japanese ISUZU Quality / China ISUZU (Qingling) Quality / Aftermarket Quality MOQ: 1 piece
Description
Products Description
The Shift Control Box is a critical component that sits atop the MYY series manual transmission in Isuzu trucks. This cover assembly houses the shift forks, shift rails, and selector mechanism that translate the driver's gear lever movement into precise internal gear engagement.
| Parameter | Specification |
|---|---|
| Product Name | Gearbox Shift Control Box / Transmission Top Upper Cover Assembly / Shift Control Cover / Gear Shift Cover Assembly |
| OE Numbers | 8980215910, 8980215911, 8982409930, 8982409931, 8982409932, 8982409933, 8-98021591-0, 8-98021591-1, 8-98240993-0, 8-98240993-1, 8-98240993-2, 8-98240993-3 |
| Quality Options | Japanese ISUZU Quality / China ISUZU (Qingling) Quality / Aftermarket Quality |
| Material | Precision die-cast aluminum alloy housing – Cast aluminum alloy shift arms |
| Control System | Twin-rod shift control with interlock plate |
| Compatible Transmissions | MYY5T (5-speed manual), MYY6S (6-speed manual) |
| Compatible Models | ISUZU M100, 600, NLR, NMR, NPR, NQR (see fitment table) |
| Function | Houses shift forks, rails, and selector mechanism – Seals transmission top |
| H/S Code | 8708409900 |
| Place of Origin | China |
| MOQ | 1 piece |
| Warranty | 1 Year |




This shift control box is specifically designed for ISUZU M100, 600, NLR, NMR, NPR, and NQR trucks equipped with the MYY5T (5-speed) or MYY6S (6-speed) manual transmissions
The MYY transmissions are widely used across Isuzu's N-Series light and medium-duty trucks, paired with engines such as the 4JJ1 and 4HK1.
The control box serves as the interface between the shift linkage and the internal gear train. It contains shift forks that move synchronizer sleeves, shift rods that guide fork movement, and a selector mechanism with an interlock plate that prevents engagement of multiple gears simultaneously. The housing also seals the top of the transmission, retaining lubricating oil and preventing contamination.


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