Twisted Street™ 845RE Transmission

Generation 1 Chrysler 845RE / ZF8HP45 8-Speed Automatic Transmission

OEM+ Strength. Daily Driver Smooth. Built the Twisted Torque™ Way.

The Twisted Street™ 845RE is our upgraded OEM+ performance rebuild designed specifically for the early Generation 1 Chrysler 845RE / ZF8HP45 8-speed automatic transmission platform.

This is NOT a basic rebuild.

The early Generation 1 845RE units are known for several common factory weak points including:

• A-clutch backing plate flex
• Valve body cross-leaks
• Converter clutch failure
• Solenoid wear
• Hydraulic pressure instability
• Delayed engagement concerns
• Heat-related clutch damage

Our Twisted Street™ package focuses on correcting the common failure areas while maintaining excellent street manners, smooth drivability, and improved long-term reliability.

Every unit is custom-built in-house and calibrated the Twisted Torque™ Way.

Recommended Applications

Perfect for:

• Daily drivers
• Highway vehicles
• Mild towing
• Stock applications
• Mild bolt-on performance vehicles

Recommended for:

• Stock to approximately 425HP applications
• 
  

Compatible Vehicles

Fits many Generation 1 Chrysler 845RE / ZF8HP45 equipped vehicles including:

• 2013–2018 Ram 1500
• 2013–2018 Dodge Charger
• 2013–2018 Dodge Challenger
• 2013–2018 Chrysler 300
• 2013–2018 Jeep Grand Cherokee

Primarily equipped with:

• 3.6L Pentastar
• Light-duty Hemi applications

Please verify fitment prior to ordering.

Twisted Street™

Twisted Torque™ HD Clutches & Steels

Upgraded clutch system designed to improve holding capacity and durability over worn factory friction materials.

Updated A-Clutch Backing Plate

Addresses one of the most common Generation 1 845RE failure points involving clutch apply instability and backing plate flex.

Modified & Updated Valve Body the Twisted Torque™ Way

Valve body circuits are inspected, updated, calibrated, and tested for improved clutch timing, pressure stability, and overall shift quality.

Modified & Updated Pump the Twisted Torque™ Way

Pump system inspected and calibrated to improve hydraulic performance and long-term reliability.

Updated Solenoid Strategy

Internal solenoids inspected and updated as required during the remanufacturing process.

Remanufactured Torque Converter

Updated lock-up clutch strategy designed to reduce converter shudder and improve drivability.

Complete Sealing System

New internal seals, sealing rings, gaskets, and sealing components installed throughout the transmission.

New Bushings

Critical bushing areas replaced during the rebuild process to restore proper hydraulic control and rotating assembly support.

New Filter & Pan Service

Complete transmission service included during final assembly.

Why These Updates Matter

Generation 1 845RE transmissions are extremely sensitive to:

• Fluid condition
• Heat
• Hydraulic pressure loss
• Valve body wear
• Clutch clearance
• Converter operation
• 
  

Many standard rebuilders simply replace soft parts without addressing the known failure areas that commonly cause:

• Harsh shifting
• Delayed engagement
• Converter shudder
• Gear ratio codes
• Limp mode
• Repeat failures

The Twisted Street™ package is designed to address those common weaknesses from the start.

IMPORTANT PROGRAMMING INFORMATION

Generation 1 Chrysler 845RE transmissions utilize an integrated TCM/mechatronic system that may require initialization, programming updates, adaptive reset procedures, and Quick Learn functions after installation.

Final programming procedures typically must be completed with the transmission installed in the vehicle using Chrysler WiTech 2.0 software with an OE Micropod interface or approved J2534 pass-through device.

In most cases, this transmission is NOT considered fully plug-and-play.

Customer and/or installer is responsible for:

• TCM initialization
• VIN verification/programming
• Quick Learn procedures
• Adaptive reset procedures
• Any dealer or programming-related charges unless otherwise specified prior to purchase

Failure to perform required programming and adaptation procedures may result in:

• Harsh shifting
• Improper shift timing
• Diagnostic trouble codes
• Limp mode
• No movement conditions
• Premature transmission failure

Twisted Torque™ is not responsible for vehicle-side programming, module communication issues, previously modified vehicle calibrations, or installation/programming errors outside of our control.

Recommended Supporting Upgrades

For best transmission life we strongly recommend:

• External transmission cooler
• Proper PCM/TCM software updates
• Fluid service every 50,000 miles
• OEM-approved transmission fluid only

Warranty

Twisted Street™ Warranty Coverage

• 24 Month Manufacturer Defect Warranty
• Unlimited Mileage
• Non-Commercial Applications

Warranty does not cover:

• Tuning-related failures
• Overheating
• Abuse
• Improper programming
• Improper installation
• Contaminated coolers
• Lack of required adaptation procedures

Important Installation Notes

• Professional installation required
• Cooler flush or replacement required
• Transmission must be properly programmed and adapted after installation
• Core must be rebuildable
• Custom-built to order
• Build time typically 10–15 business days

Twisted Torque™

Drive With Confidence.