Product Description
CNC Fabrication 423021 94-97 7.3L Replacement Plenum Boot Kit - Blue
The CNC Fabrication 423021 Replacement Plenum Boot Kit is a direct replacement upgrade for the factory intake plenum boots found on 1994.5-1997 Ford 7.3L Power Stroke diesel engines. Constructed from premium 5-layer aramid reinforced silicone, these high-performance boots are engineered to withstand elevated boost pressures, high temperatures, and the demanding conditions of towing, daily driving, and performance applications.
Unlike factory rubber boots that can become brittle and deteriorate over time, the CNC Fabrication 423021 kit features heavy-duty silicone construction rated up to 180 PSI and includes American-made stainless steel T-bolt clamps for superior clamping force and long-term reliability. The vibrant blue finish provides a clean custom appearance while delivering dependable sealing performance for stock and modified 7.3L Power Stroke engines.
Features
- Direct replacement for factory intake plenum boots
- Designed for 1994.5-1997 Ford 7.3L Power Stroke engines
- Premium 5-layer aramid reinforced silicone construction
- Rated for high temperature and high boost applications
- Pressure rated to 180 PSI
- Durable blue silicone finish
- Includes American-made stainless steel T-bolt clamps
- Superior sealing compared to factory rubber boots
- Ideal for stock, towing, and performance applications
- Built for long-term reliability and durability
Fitment
- 1994.5 Ford F-Series 7.3L Power Stroke
- 1995 Ford F-Series 7.3L Power Stroke
- 1996 Ford F-Series 7.3L Power Stroke
- 1997 Ford F-Series 7.3L Power Stroke
- Direct replacement for factory intake spider-to-plenum boots
Note: Prior to installation, thoroughly clean the intake spider and mating surfaces of any oil, dirt, or residue. Oil contamination from the CCV system can reduce grip and may cause silicone boots to slip under boost pressure if surfaces are not properly cleaned.
What's Included
- (2) Blue 5-Layer Reinforced Silicone Intake Plenum Boots
- (4) Stainless Steel American-Made T-Bolt Clamps
Specifications
- Manufacturer: CNC Fabrication
- Part Number: 423021
- Color: Blue
- Application: Intake Plenum Boot Replacement Kit
- Engine Compatibility: 1994.5-1997 Ford 7.3L Power Stroke
- Material: 5-Layer Aramid Reinforced Silicone
- Pressure Rating: 180 PSI
- Temperature Resistance: High-Temperature Silicone Construction
- Clamp Style: Stainless Steel T-Bolt Clamps
- Clamp Material: American-Made Stainless Steel
- Boot Quantity: 2
- Clamp Quantity: 4
- Installation Location: Intake Spider to Intake Plenums
- Replacement Type: Direct Factory Replacement
Cross Reference Numbers
423021, CNC423021, 7.3L Plenum Boot Kit, 7.3 Power Stroke Intake Boot Kit, 7.3 Silicone Plenum Boots, Power Stroke Intake Spider Boot Kit
FAQ
Will these boots fit my 1997 7.3L Power Stroke?
Yes. The CNC Fabrication 423021 kit is designed specifically for 1994.5-1997 Ford 7.3L Power Stroke engines.
Are these stronger than the factory boots?
Yes. These boots feature a 5-layer aramid reinforced silicone construction that offers significantly greater durability and pressure resistance than aging factory rubber boots.
What is the pressure rating of these boots?
The CNC Fabrication 423021 plenum boots are rated to withstand up to 180 PSI.
Do the clamps come with the kit?
Yes. The kit includes four American-made stainless steel T-bolt clamps for secure installation and improved clamping force.
Why should I clean the intake spider before installation?
Oil residue from the crankcase ventilation system can reduce grip between the silicone boots and intake components, increasing the chance of the boots slipping under boost pressure.
Are these boots suitable for performance applications?
Yes. These reinforced silicone boots are commonly used on stock, towing, tuned, and performance-oriented 7.3L Power Stroke applications.
