ES56-5A | Spicer | TTC | Tremec 5-Speed Transmission | BOM 301734 | Remanufactured

ES56-5A | Spicer / TTC / Tremec 5-Speed Transmission — Remanufactured by DPX (BOM 301734)

The ES56-5A (also known as TR-S56-5A / TR-S46-5A) is a direct-drive, fully synchronized 5-speed transmission built for medium-duty performance. Trusted in vocational, regional delivery, and utility fleets. Remanufactured in Mansfield, Ohio by Discount Parts Exchange - DPX using top-tier OEM and aftermarket components.

Call DPX to confirm: 419-522-3320.

Highlights

• Model: ES56-5A (aka TR-S56-5A / TR-S46-5A)
• Speeds: 5 forward / 1 reverse (fully synchronized)
• Top Gear: 1.00 (Direct)
• Design: Single countershaft; top-cover shift
• Bill of Materials (BOM): 301734
• PTO Ports: Right & left 6-bolt | PTO Speed: ~49% engine
• Overall Length: 27.05 in
• Dry Weight: ~325 lb
• Clutch Housing: SAE #2 (bell housing not included)
• Recommended Lubricant: SAE 50 heavy-duty engine oil | Capacity: ~12 pints
• Applications: Medium-duty vocational, regional delivery, and utility fleets

Gear Ratios (ES56-5A)

What’s Included

• Remanufactured Spicer ES56-5A 5-speed transmission rebuilt to factory spec by Discount Parts Exchange - DPX
• 12-month, unlimited-mileage parts-only warranty
• Tech support from DPX during install and initial run-in

Core Exchange Policy

• Exchange Required: Like-for-like, complete, and rebuildable core
• Possible Deductions: Cracked housings, burnt or missing internals, water or low-lube damage, or non-matching core
• Preparation: Drain and palletize the core for pickup

Shipping

• Ships via LTL motor freight to verified commercial addresses only
• No residential delivery — forklift or dock required (liftgate by request)

Image Disclaimer

Photos are representative; final appearance may vary by build and casting revision.

Call to Order

Call Discount Parts Exchange - DPX for pricing and availability: 419-522-3320

DPX Drivetrain Tools Hub

Free tools built by rebuilders for truckers and fleets — Road Speed & Ratio Calculator, PTO shimming procedure, gear ratio comparison charts, and our full IPL library for instant parts identification.
Open DPX Drivetrain Tools Hub →

Reference Documentation

For detailed exploded-view diagrams, part numbers, and service data, download the official Spicer / TTC ES56-5A Illustrated Parts List.

DPX — Ohio’s Premier Heavy-Duty Drivetrain Rebuilder | Built to Perform. Trusted to Last.