Heavy Duty Truck Parts

New Parts Added! Sign Up for Updates

SKU: TRN02623

Countershaft for RTLO 14613B | 3088-A-6689, 4300392, 4303559, A-5746, A-6689, FULA-6689, FUR-A-6689, FURA6689, K-2968, K2939, K2968, M13A-6689, M13A6689, NSFSA6689, S-11245, S11245, WAPA6689

Regular price $356.93
Shipping calculated at checkout.


If you need to order multiple parts, give us a call so our sales team can work to combine your order into fewer packages and save you money on shipping! 858-898-1558

Delivery and Shipping

This part typically ships within 1 to 2 business days.

This Manual Transmission Countershaft is precision manufactured to OEM synchronizer, gear, and bearing specifications for smooth, notch-free gear engagement in commercial trucks.

Specifications

Schematic RTLOA14618
Schematic RTLOA16618
Schematic RTLOB14613
Schematic RTLOF14618A
Schematic RTO15618
Warranty Period 1 Year or 100,000 Miles

Interchange / Cross-Reference Numbers

Brand Part Number
Mack 3088-A-6689
Fuller- Transmissions 4300392
Fuller- Transmissions 4303559
Fuller- Transmissions A-5746
Fuller- Transmissions A-6689
International FULA-6689
Genuine Newstar FUR-A-6689
Fuller- Transmissions FURA6689
Fuller- Transmissions K-2968
Fuller- Transmissions K2939
Fuller- Transmissions K2968
Rockwell International M13A-6689
Rockwell International M13A6689
International NSFSA6689
Genuine Newstar S-11245
Genuine Newstar S11245
World American WAPA6689

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.