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21703 91 8308 31973000 Manual Paddle Valve Switch for Bostrom and National Seats

21703 91 8308 31973000 Manual Paddle Valve Switch for Bostrom and National Seats

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$34.49
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This Manual Paddle Valve Switch is a replacement switch compatible with Bostrom and National Seats and matches OEM Part# 21703, 91-8308, 31973000.
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I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.

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Product Overview

This Manual Paddle Valve Switch is a replacement switch compatible with Bostrom and National Seats and matches OEM Part# 21703, 91-8308, 31973000.

Product Overview

Key Features & Performance

This manual paddle valve switch controls air supply for seat adjustment in Bostrom and National Seats. It is a direct replacement using OEM part numbers 21703, 91-8308, and 31973000. Designed for heavy-duty truck and bus seating systems.

  • Constructed with robust materials for long service life in commercial vehicles
  • Simple manual push-button operation with a paddle-style actuator
  • Exact fit for compatible Bostrom and National seat models
  • Replaces multiple OEM part numbers for broad compatibility
  • Easy to install with basic tools

Fitment & Compatibility

  • Bostrom seats
  • National Seats

Common Uses

  • Replacement for failed paddle valve switches in heavy truck air suspension seats
  • Used in bus driver seats requiring manual air release
  • Suitable for off-road and construction vehicle seating systems

Technical Specifications

  • Part Number(s): 21703, 91-8308, 31973000
  • Product Type: Manual Paddle Valve Switch

Frequently Asked Questions

Q: Will this switch work on all Bostrom seats? A: It is designed for most models, but verify your seat's part number against the listed OEM numbers before purchase.

Q: Is this a genuine OEM part? A: This is a replacement part matching OEM specifications; it may be aftermarket but meets original fit and function.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.

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