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POWERTRAIN SOLUTIONS
HD & HP Diesel Performance
Elevate Your Diesel Performance with Powertrain Solutions!
At Powertrain Solutions, we specialize in providing top-tier Diesel Performance Transmissions that rival the best in the industry.
Our 4000 and 5000 series transmissions are designed to meet the needs of high-end general repair shops, transmission specialty shops, and diesel performance shops.
SEE WHAT WE CARRY
Additional manufacturers may be available. Please call today to inquire about pricing.
PORTAL ACCESS CONTACT USManufacturer Types
High volume shop, multi-shop, distributor?
credit rebate program &
distributor program available
Powertrain Solutions
Choose Your Series: 4000 vs 5000
4000 Series
“The No-Excuses Heavy Hauler (Built for Not Stock Life)”
The 4000 Series is built for trucks that gave up on “stock” a long time ago. Designed for extreme-duty vocational work, oversized loads, and high-horsepower setups, this transmission thrives where OEM units simply tap out.
If your truck works harder, tows heavier, or makes more power than the factory ever intended, the 4000 Series delivers industrial-grade muscle with zero apologies.
5000 Series (68RFE)
“Finally, a 68RFE Built for Not Stock Power, Towing, and Abuse”
Our 5000 Series 68RFE is engineered for everything the stock 68RFE couldn’t handle: big towing, big torque, big upgrades. Fully reworked from the inside out, it’s built for tuned, towing-heavy, and power-added trucks that demand real durability.
If your Ram left “stock” miles ago, this is the 68RFE that finally keeps up with your power goals, your towing needs, and your right foot.
Best fit for: tuned trucks, heavy towing, power-added builds, and drivers who need a 68RFE that holds up under real use.
4000 Series Upgrades
What’s Upgraded in the 4000 Series (Built for NOT Stock Towing & Power)
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Billet Torque Converter Upgrade
A fully reengineered billet converter replaces the weak factory design, delivering drastically improved lockup strength, torque multiplication, and reliability under extreme towing and high-horsepower use.
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Billet Internal Hard Parts
Critical rotating components are replaced with billet-strengthened versions designed to handle massive torque loads without twisting, flexing, or premature wear, ideal for commercial duty and oversized applications.
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Heavy-Duty Clutch Pack Enhancements
We install increased-capacity clutch packs using premium friction materials and optimized clearances, allowing the 4000 Series to handle continuous high torque where stock units fail.
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Upgraded Pressure & Hydraulic Control
The valve body and hydraulic circuits receive precision calibration and machining to maintain stable line pressure under the harshest duty cycles, improving shift quality and load-holding power.
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Enhanced Lubrication for Extreme Use
Modified lubrication paths increase fluid flow to critical hotspots, reducing internal temperatures and preventing thermal breakdown during long hauls, steep grade towing, and commercial workloads.
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Advanced Thermal Management System
Strategic upgrades help the transmission shed heat faster and operate within a safe temperature range even when pushed far beyond OEM specifications, crucial for heavy towing and power-added builds.
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High-Strength Bearings, Bushings & Seals
Reinforced components provide long-term durability and stability under constant load, ensuring that the transmission remains reliable for fleet, vocational, and extreme towing environments.
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Precision Machined & Blueprinted Assembly
Every 4000 Series build undergoes meticulous machining, blueprinting, and tolerance verification, ensuring consistent performance, longevity, and power-holding capability well beyond stock.
Quality Control
How We Test and Verify
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Dyno Tested
Drive and coast cycles, line pressure, shift timing, lockup function, and thermal checks.
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Calibration
Series-level shift logic designed for torque and use case, smooth under load, firm under throttle.
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Final Checks
Leak test, fastener torque, converter charge, and engagement verified.
Why it matters
Diesel performance builds live under higher torque and heat. Verification helps ensure consistent pressure control, lockup behavior, and reliability before shipping.
Coverage
Warranty Options for Diesel Performance Builds
Because these are extreme, high-stress builds, warranty coverage is more limited than standard towing or stock-replacement units.
2-Year / 24,000-Mile Warranty (available on these series)
3-Year / 100,000-Mile Warranty (available on these series)
Coverage varies by unit and series. Refer to the warranty details for eligibility, requirements, and what is covered.
Helpful Links
Warranty details
Coverage options, terms, and protection plan details.
Cooler and contamination policy
Required cooler and flushing steps to validate coverage.
Core return steps
RA requirements, packaging rules, and core credit standards.
Pre-programming support
VIN requirements and available programming services.
Customer portal login
Portal access for inventory, ordering, and account tools.
Request a business account
Apply for account access to view inventory and pricing.