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Transmission Insert Valve for Mack ,Navistar & Fuller - Replaces 19974

Transmission Insert Valve for Mack ,Navistar & Fuller - Replaces 19974

SKU: F112810

Availability: In Stock

Stock Level: More than 50 available.

Shipping: Calculated at Checkout

Regular price $4.80 USD
Regular price Sale price $4.80 USD
Sale Sold out
Shipping calculated at checkout.

About this Item

  • Regulates hydraulic pressure to ensure smooth gear shifts and efficient transmission operation.
  • Engineered for robustness and longevity to withstand heavy-duty use in commercial trucking applications.
  • Controls clutch engagement and disengagement for precise gear changes.
  • Helps prevent premature wear on transmission components, leading to lower maintenance costs and longer service intervals.
  • Designed to match the specifications and functionality of the original OEM components, ensuring proper fit and performance in your transmission system.


Experience smooth gear changes with Fortpro Transmission Insert Valve. Compatible with Mack, Navistar & Fuller transmissions, replaces OEM numbers 15512 and 19974. Built to last under heavy conditions, ensuring reliable, cost-effective performance.


  • Brand: Fortpro
  • Vehicle Type: Semi-Trucks / Heavy Trucks
  • Product Department: Transmission
  • Product category : Valves
  • Part Type: Transmission Insert Valve / Transmission Splitter Valve
  • OEM Reference #: 15512, 19974
  • Height: 28mm
  • Outside Diameter (O.D): 12.5mm
  • Applications: Fuller 6613 Transmission 13,15,18 Speed Fuller 9513 Series Fuller 12510 Series Fuller 12513 Series Fuller12515 Series Fuller 14909 Series Mack Navistar/International


  • Fuller: 15512, 19974, FUL19974
  • Mack: 421SH163
  • Navistar/International: 363048C92, 363048C91.
  • PAI: EF36610

Shipping Policy

In order to send your purchase, our company may use different freight companies like USPS, UPS and some 3erd Carrier Services for Oversize orders, this will not affect the final price of your order. We will send you all the information in due time. 

For Free Shipping and Freight/Oversize Shipments they are some special term you may check at our Terms & Conditions page.


Return Policy

If for any reason you need to return a purchased item, we have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must met the conditions stablished in our Terms & Conditions.

To start a return, you can contact us at


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