HomeEngine > Cylinder Block ComponentsPioneer Cables PE-120-R Engine Expansion Plug Kit
Part #: PE-120-R

Pioneer Cables PE-120-R Engine Expansion Plug Kit

⚙️ 56 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Cadillac, Commercial Chassis, DeVille, Eldorado, Fleetwood, and Seville
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Pioneer Cables PE-120-R Engine Expansion Plug Kit

Pioneer Cables PE-120-R is an engine expansion plug kit for cylinder block service and rebuild work. It is a steel plug set with zinc plating for corrosion resistance, built for applications that call for a durable, OE-style sealing solution.

Key Features

  • Engine expansion plug kit for cylinder block components
  • Steel construction with fine-grained, cold-rolled material for strength
  • Zinc plated finish for added corrosion resistance
  • Packaged for rebuild and service use
  • Part number PE-120-R for ordering and catalog lookup

Detailed Description

This Pioneer Cables PE-120-R kit is part of the brand’s expansion plug program, which includes steel, brass, stainless steel, and threaded options for engine rebuilding. This specific kit uses steel plugs with a zinc-plated finish, making it a practical choice where a strong, corrosion-resistant block plug is required. It is listed for Cadillac applications including Commercial Chassis, Fleetwood, DeVille, Eldorado, and Seville across the 1968-1984 model years.

For buyers searching for a Cadillac DeVille engine expansion plug kit, Cadillac Fleetwood cylinder block plug replacement, or a PE-120-R steel expansion plug kit for Cadillac Eldorado applications, this part number provides a direct catalog match. PE-120-R is also a useful reference when sourcing engine block freeze plugs for Cadillac Commercial Chassis service work.

Common Uses

  • Replacing corroded or leaking cylinder block expansion plugs
  • Servicing engine blocks during rebuild or teardown
  • Restoring sealing integrity in older Cadillac engines
  • Addressing coolant seepage around block plug openings
  • Supporting engine maintenance on vintage Cadillac platforms

Installation Notes and Tips

Inspect the block bore before installation and clean away rust, scale, and old sealant. Verify plug size and seating depth against the engine block opening before final assembly. For best results, install using proper driver tools and follow the engine builder’s sealing procedure for the application.

Quality Assurance

Pioneer Cables manufactures expansion plugs in multiple materials for rebuild applications, including steel, brass, stainless steel, and threaded styles. PE-120-R uses steel construction with zinc plating to support long-term service in engine block environments.

This part fits 56 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1984CadillacCommercial Chassis6.0LV8N/ASteel - Poly Bagged
1984CadillacFleetwood6.0LV8N/ASteel - Poly Bagged
1983CadillacCommercial Chassis6.0LV8N/ASteel - Poly Bagged
1983CadillacFleetwood6.0LV8N/ASteel - Poly Bagged
1982CadillacCommercial Chassis6.0LV8N/ASteel - Poly Bagged
1982CadillacFleetwood6.0LV8N/ASteel - Poly Bagged
1981CadillacCommercial Chassis6.0LV8N/ASteel - Poly Bagged
1981CadillacDeVille6.0LV8N/ASteel - Poly Bagged
1981CadillacEldorado6.0LV8N/ASteel - Poly Bagged
1981CadillacFleetwood6.0LV8N/ASteel - Poly Bagged
1981CadillacSeville6.0LV8N/ASteel - Poly Bagged
1980CadillacCommercial Chassis6.0LV8N/ASteel - Poly Bagged
1980CadillacDeVille6.0LV8N/ASteel - Poly Bagged
1980CadillacEldorado6.0LV8N/ASteel - Poly Bagged
1980CadillacFleetwood6.0LV8N/ASteel - Poly Bagged
1980CadillacSeville6.0LV8N/ASteel - Poly Bagged
1979CadillacCommercial Chassis7.0LV8N/ASteel - Poly Bagged
1979CadillacDeVille7.0LV8N/ASteel - Poly Bagged
1979CadillacFleetwood7.0LV8N/ASteel - Poly Bagged
1978CadillacCommercial Chassis7.0LV8N/ASteel - Poly Bagged
1978CadillacDeVille7.0LV8N/ASteel - Poly Bagged
1978CadillacEldorado7.0LV8N/ASteel - Poly Bagged
1978CadillacFleetwood7.0LV8N/ASteel - Poly Bagged
1977CadillacCommercial Chassis7.0LV8N/ASteel - Poly Bagged
1977CadillacDeVille7.0LV8N/ASteel - Poly Bagged
1977CadillacEldorado7.0LV8N/ASteel - Poly Bagged
1977CadillacFleetwood7.0LV8N/ASteel - Poly Bagged
1976CadillacCommercial Chassis8.2LV8N/ASteel - Poly Bagged
1976CadillacDeVille8.2LV8N/ASteel - Poly Bagged
1976CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1976CadillacFleetwood8.2LV8N/ASteel - Poly Bagged
1975CadillacCommercial Chassis8.2LV8N/ASteel - Poly Bagged
1975CadillacDeVille8.2LV8N/ASteel - Poly Bagged
1975CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1975CadillacFleetwood8.2LV8N/ASteel - Poly Bagged
1974CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1974CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1974CadillacFleetwood7.7LV8N/ASteel - Poly Bagged
1973CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1973CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1973CadillacFleetwood7.7LV8N/ASteel - Poly Bagged
1972CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1972CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1972CadillacFleetwood7.7LV8N/ASteel - Poly Bagged
1971CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1971CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1971CadillacFleetwood7.7LV8N/ASteel - Poly Bagged
1970CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1970CadillacEldorado8.2LV8N/ASteel - Poly Bagged
1970CadillacFleetwood7.7LV8N/ASteel - Poly Bagged
1969CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1969CadillacEldorado7.7LV8N/ASteel - Poly Bagged
1969CadillacFleetwood7.7LV8N/ASteel - Poly Bagged
1968CadillacDeVille7.7LV8N/ASteel - Poly Bagged
1968CadillacEldorado7.7LV8N/ASteel - Poly Bagged
1968CadillacFleetwood7.7LV8N/ASteel - Poly Bagged

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.