BD DIESEL 1062121 BUILD-IT FORD 7.3L POWER STROKE 4R100 TRANS KIT 1999-2003 STAGE 1 STOCK HP KIT

Product Description

The BD DIESEL 1062121 Stage 1 Build-It Transmission Kit is the go-to internal rebuild kit for restoring the 4R100 automatic behind your 1999–2003 Ford 7.3L Power Stroke in stock horsepower applications. This kit is designed for experienced rebuilders who want quality internal components, consistent clutch performance, and a proven parts combination that BD Diesel uses in performance-minded transmission work.

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If your 4R100 is slipping, flaring between shifts, or due for a full refresh, the Stage 1 kit provides the essential rebuild parts and gaskets you need to get back to strong, dependable operation. It’s built to support towing and daily driving with a clean, thorough parts package—without changing drivability for stock-power trucks.

Kit Highlights

• Stage 1 rebuild kit for stock horsepower applications
• Quality friction and steel selections for reliable clutch apply
• Core internal components for a complete rebuild foundation

Typical Kit Contents

• Basic rebuild parts and gasket set
• 1-piece case bushing
• Clutch frictions & steels (coast, direct, forward, intermediate, low/reverse, overdrive)
• Bearing components
• Filter
• Overhaul kit components

Fitment

• 1999–2003 Ford 7.3L Power Stroke Diesel
• Equipped with 4R100 automatic transmission
• Stock horsepower applications

Install Note: This kit includes internal components and requires transmission removal and a full rebuild process. Final build quality and setup are the responsibility of the builder/installer.

Cross-Reference / Compatible BD DIESEL Products

• BD DIESEL 1061716 DEEP SUMP TRANS PAN – E4OD/4R100/5R110 (ADDS CAPACITY & COOLING)
• BD DIESEL 1064013 INLINE TRANS FILTER KIT – 1999–2003 FORD 7.3L (4R100)
• BD DIESEL 1600410 TUGGER SHIFT KIT – 1999–2003 FORD 7.3L (4R100)
• BD DIESEL 1600411 ON/OFF LOCKUP KIT – 1999–2003 FORD 7.3L (4R100)

FAQ

Is this kit for stock trucks or modified trucks?

This is the Stage 1 Build-It kit intended for stock horsepower applications. If you’re running added power, towing heavy, or upgrading the converter/valve body, a higher stage kit may be a better match.

Does this kit include everything needed to rebuild a 4R100?

It includes the core rebuild parts, gaskets, frictions, steels, and related internal components typically required for a rebuild foundation. Any hard-part damage, specialty upgrades, or wear items outside the kit should be inspected and addressed during teardown.

Do I have to remove the transmission to install this kit?

Yes. This kit contains internal components and requires transmission removal and full disassembly for installation.

Specifications for BD DIESEL PRODUCTS 1062121