our transmissions
Our Transmissions: Built forPerformance at 1023 Diesel & Fleet
Featured Transmission Builds
Stock Plus 68RFE Transmission
The Stock Plus 68RFE is perfect for trucks with up to 400HP, offering a balance of performance and reliability for daily use and light towing.
Key Features:
- Upgraded Low Stall Torque Converter: Improves load handling and smooths gear transitions.
- Added Overdrive Frictions: Enhances torque capacity for improved towing and hauling.
- New OEM Solenoid Pack and Line Pressure Sensor: Ensures consistent and reliable operation.
- Modified Valve Body with Oversized Valves: Restores hydraulic integrity for better shifting.
- Billet Accumulator Pistons and Optional Deep Pan: Prevent blowouts and improve cooling.
- Upgraded Transmission Coolers:
Keep temperatures in check under heavy use.
This transmission is ideal for drivers who need a durable upgrade that handles moderate workloads without sacrificing efficiency.
Stage 1 68RFE Transmission
Built for heavy towing and trucks up to 650HP, the Stage 1 68RFE delivers the durability and performance needed for demanding applications.
Key Features:
Sonnax Oversized Solenoid Switch Valve: Improves hydraulic performance and reliability.
Goerend 300M Billet Input Shaft: Provides exceptional strength for heavy towing and high power.
D&P Dual Disc Low Stall Converter: Optimized for towing performance, reducing strain on the transmission.
Billet Components: Includes billet accumulator pistons and a steel-threaded filter upgrade to prevent falling filters.
DNJ Components Billet Valve Body and Separator Plate: Ensures durability and smooth operation under heavy loads.
Optional Cast Aluminum Deep Pan: Helps dissipate heat and stiffens the transmission case for added strength.
This transmission is perfect for trucks that tow regularly or run moderate power levels, ensuring longevity and reliability.
Stage 2 48RE Transmission
The Stage 2 48RE is engineered for heavy-duty performance and reliability, making it the go-to choice for demanding workloads.
Key Features:
GPZ Frictions in Direct and Overdrive Brake: Deliver superior durability under heavy loads.
Billet Low Stall Converter with Triple Disc: Smooth power delivery for towing and performance.
Machined Sealing Surfaces: Prevent cross leaks and maintain line pressure for consistent operation.
Modified Valve Body: Provides higher pressure for improved reliability.
Reconditioned Case and Overdrive Housing: Restores proper end play for smooth operation.
Goerend Cast Aluminum Pan and SFI Flex Plate: Enhance cooling and structural strength.
Designed for trucks that tow, haul, or face extreme conditions, the Stage 2 48RE is built for longevity and peak performance.
4R100 HD Build Transmission – 450HP
Balancing reliability and performance, the 5R110 HD Build is ideal for heavy workloads and consistent towing.
Key Features:
Updated 09+ Pan and Filter: Improves filtration and fluid flow for better performance.
Upgraded to 05+ Components: Replaces outdated parts for increased durability.
Direct Clutch Piston Machined for Additional Frictions: Enhances power handling under heavy loads.
Solenoids Tested and Replaced: Ensures precise and reliable shifting.
TCM Calibration Audit: Prevents damage by ensuring compatibility with your vehicle.
This transmission is the perfect option for trucks that prioritize reliability while handling consistent towing needs.
5R110 Stage 2 Transmission – 600HP
For trucks requiring increased power, the 5R110 Stage 2 Transmission offers excellent durability and performance.
Key Features:
Billet Triple Disc Custom Stall Converter: Handles torque efficiently and enhances towing performance.
Machined Parts for Additional Frictions: Improves durability in overdrive, intermediate, and direct gears.
New Bearings, Seals, and Gaskets: Ensures a long-lasting, like-new operation.
Modified Pump with Pressure Control Kit: Provides consistent operation under heavy use.
This build is designed for trucks needing more power for heavy towing or high-performance applications.
5R110 Stage 3 Transmission – 850+ HP
For extreme horsepower applications, the 5R110 Stage 3 Transmission is engineered for maximum power and reliability.
Key Features:
Warren Diesel Competition Clutch Kit: Handles extreme power delivery and torque.
Billet Input and Intermediate Shafts: Built to withstand heavy stress and maintain strength.
Modified Pump with Pressure Control Kit: Maintains consistent performance under extreme loads.
Billet Overdrive Planetary Carrier and Low/Reverse Planetary Carrier: Adds durability and prevents failure during high-performance use.
This transmission is the ultimate choice for high-horsepower trucks, delivering unmatched durability and precision.
Stage 1 48RE Transmission
The Stage 1 48RE Transmission is engineered for trucks that need improved durability and performance for light to moderate workloads. Whether you’re towing, hauling, or commuting, this transmission upgrade ensures smoother shifts and dependable functionality.
Key Features:
Durable Friction Components: GPZ frictions in direct and overdrive brakes for long-lasting performance under load.
Enhanced Power Delivery: Low stall billet converter for smoother, more efficient towing and hauling.
Improved Cooling: Valve body modifications and Goerend cast aluminum pan for optimized fluid flow and heat dissipation.
Complete Overhaul: Includes new sensors, solenoids, bearings, seals, and reconditioned housing to restore proper functionality.
Hydraulic Upgrades: Transgo correction package and modified valve body for consistent line pressure.
This transmission is the go-to choice for truck owners needing a reliable, heavy-duty solution that balances performance and durability.
4R110 HD Build Transmission – 450HP
The 4R110 HD Build Transmission is designed for trucks handling up to 450HP, providing the strength and reliability required for heavy-duty applications. With upgraded components and advanced engineering, this transmission ensures exceptional performance for towing, hauling, and more.
Key Features:
Reinforced Internal Components: New sensors, solenoids, bushings, and hardened sun shell for improved strength and longevity.
Optimized Cooling: Upgraded F550 oil cooler and deep pan for better fluid temperature management.
Enhanced Shifting: Modified shift pressures and billet low stall converter for smooth, responsive operation under heavy loads.
Structural Integrity: Machined center support to prevent “Case Walk” and ensure stability under demanding conditions.
Precision Engineering: Reconditioned pump and valves for precise and reliable performance.
This transmission is the go-to choice for truck owners needing a reliable, heavy-duty solution that balances performance and durability.
Transmission Warranty Coverage at 1023 Diesel & Fleet
What Our Warranty Covers:
- Parts and Labor: Includes coverage for all parts installed and the labor associated with repairs or replacements performed in our shop.
- Transmission Fluid Replacement: The cost of replacing the transmission fluid is included when warranty work is required.
- Craftsmanship Guarantee: All workmanship is covered, ensuring that your transmission performs as expected.
Exclusions from the Warranty:
- Vehicle Modifications: Coverage does not extend to transmissions installed in vehicles modified beyond factory specifications, such as oversized tires, excessive horsepower increases, or drivetrain changes.
- Improper Maintenance or Misuse: Failure to maintain fluid levels, delayed maintenance, or misuse of the vehicle voids the warranty.
Maintenance Requirements to Maintain Coverage:
- Initial Check: Bring your vehicle in for an inspection within the first 1,000 miles after installation to ensure everything is operating properly.
- Fluid and Filter Maintenance: The fluid, filter, and pan must be cleaned or replaced every 30,000 miles or as specified by our team.
- Professional Service Only: All maintenance and inspections must be performed by qualified professionals to avoid warranty voidance.
Why Choose 1023 Diesel & Fleet for Transmissions?
- Custom Builds: We design transmissions tailored to your truck’s specific needs, including towing, hauling, and high-performance driving.
- Quick Turnaround Times: With heavy-duty rebuilds in stock, we reduce downtime and get you back on the road faster.
- Expert Technicians: Our Master ASE-certified specialists and OEM-trained technicians bring unmatched expertise to every build.
- Premium Components: We only use high-quality parts from trusted brands like Sonnax, Goerend, Warren Diesel, and Transgo.
Contact 1023 Diesel & Fleet forTransmission Expertise
Upgrade your truck with one of our expertly crafted transmission builds. From the Stock Plus 68RFE to the high-performance 5R110 Stage 3, 1023 Diesel & Fleet has the solutions you need for peak performance.
Visit us at 530 E Steel Loop, Palmer, AK 99645, or call us at (907) 414-8592 to schedule your service.
When it breaks, we fix it!
