Three brands dominate the Allison 1000 master rebuild kit space: SunCoast, Raybestos, and BD Diesel. Each has strengths. Here is the head-to-head buyer guide.
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Allison 1000 Overhaul Rebuild Kit with Molded Pistons
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What an Allison master rebuild kit includes
- All friction clutches (C1-C5)
- All steel separator plates
- All sealing rings
- All gaskets and O-rings
- Pan filter
- Pump bushings
- External spin-on filter (some kits)
SunCoast Stage 1-5 master kits
What you get:
Strengths:
Cost by stage:
Best for:
Raybestos Powertrain master kit
What you get:
Strengths:
Cost:
Best for:
BD Diesel master kit
What you get:
Strengths:
Cost:
Best for:
Head-to-head comparison
Best friction material:
Best for tuned trucks:
Best value (stock truck):
Best all-in-one with shift kit:
What is NOT in any master kit
- Torque converter ($1,000-$2,500 HD triple-disc)
- Hard parts (planetaries, drums)
- HD billet input shaft ($600-$900)
- TES-295 fluid ($300-$500)
- Solenoid pack (if needed: $300-$500)
Cost comparison for full rebuild
SunCoast Stage 2 build:
Raybestos build:
BD build:
Stage selection guidance (SunCoast)
Stage 1 (stock truck):
Stage 2 (mild tune):
Stage 3 (tow tuned):
Stage 4 (HP truck):
Stage 5 (race):
Common mistakes
- Buying Stage 1 for tuned truck (wasted money - will fail)
- Skipping converter at rebuild (kills new clutches)
- Using Dexron VI instead of TES-295 (destroys build)
- Reusing old solenoid pack (fails 6 months later)
Recommendation
Tuned LB7-LMM Duramax:
Stock LBZ-LMM:
Mod tow rig (LML):
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