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BD Diesel

BD Diesel Transmission Kit - 1999-2003 Ford 4R100 4wd

BD Diesel Transmission Kit - 1999-2003 Ford 4R100 4wd

Regular price $5,579.99 USD
Regular price Sale price $5,579.99 USD
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Shipping & returns

Shipping is calculated at checkout by size and destination. Most in-stock gear ships within a few business days; large freight items (campers, racks, bumpers) are made to order. Wrong fitment? Send it back within 30 days — we'll help you find the part that does fit.

Fitment & build help

Not sure if this fits your platform? Tell us your year, make, model, and trim — we'll confirm before you order. For bigger builds, we'll help you plan the full stack.

Warranty

Every product on this site ships through authorized channels with full manufacturer warranty. If something breaks in normal use, we'll help you get it resolved.

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Machined center support; Machined intermediate piston; Machined low/reverse pressure plate; Machined rear ring gear hub; Added lube circuits to OD planet; Added lube and support to output and intermediate shafts; Replaced all aluminum planetaries with steel; Drilled and tapped direct and intermediate feeds to prevent leaks at case; Re-programmed accumulator body; Full shift kit with line mod valve to increase pressures; Accumulator body enhanced oil flow; Increased cooler pressure; Increased pressure to converter; Creates positive clutch application; Created lube circuit for towing in overdrive; 1990-2003 include auxiliary frame mounted full flow filter kit; Clutch Count: COAST CLUTCH 2; Clutch Count: FORWARD 5; Clutch Count: DIRECT 5; Clutch Count: LOW REVERSE 7; Clutch Count: INTERMEDIATE 4; Clutch Count: OVERDRIVE 4; Pan adds 6qt extra oil capacity; Fully rollerized geartrain; Tighter clutch packs that provide a quicker shift; 30%-40% more clutch material with additional steels; Improved internal lubrication by adding high power boost valves; Reworked front pump; Improved bearing designs; Upgrade supports; Upgraded sprags; Sure-loc snap rings; Solenoids hard wiring providing high temperature resistance; Increase the durability of your drivetrain; Revised oil circuits; Handles up to 300% more power and torque than the stock transmission; Extra clutches and stronger internals; BD rigid aluminum heavy duty transmission pan; Pan reduces case flex; Pan reduces internal oil leakage; Pan heat-dissipating fins keep temperature down; Pan magnetic drain plug
  • Ships from San Diego

    We ship from our San Diego dealer network. Most in-stock gear goes out within a few business days — shipping's calculated at checkout by size and destination.

  • Wrong fitment? We make it right.

    If a part doesn't fit your platform the way it should, send it back. We handle the return and find you the part that does.

  • Authorized dealer support

    Every product moves through proper channels. Full manufacturer warranty, real tech support — no gray-market headaches.