Four Seasons
PAC-Kit w/ New Compressor

Four Seasons 2025N A/C Compressor and Component Kit

Brand Four Seasons 3860P
Housing Bore Max (Inch) 2.5256
Housing Bore Max (MM) 64.1500
Housing Bore Min (Inch) 2.5246
Housing Bore Min (MM) 64.1250
Oil Clearance Max (Inch) 0.0042
Oil Clearance Max (MM) 0.1070
Oil Clearance Min (Inch) 0.0014
Oil Clearance Min (MM) 0.0360
Overall Length Max (Inch) 0.9020
Overall Length Max (MM) 22.9100
Standard Shaft Max (Inch) 2.3992
Standard Shaft Max (MM) 60.9400
Standard Shaft Min (Inch) 2.3982
Standard Shaft Min (MM) 60.9140
Wall Thickness Max (Inch) 0.0620
Wall thickness Max (MM) 1.5750
Product line PAC-Kit w/ New Compressor
Fits —28 vehicles

PAC-Kit with new compressor. Complete A/C compressor kit for a straightforward replacement.

A/C compressor kit for restoring cooling performance.

$325.86Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $325.86
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Four Seasons 2025N A/C Compressor Kit

The Four Seasons PAC-Kit w/ New Compressor is a direct-fit HVAC service kit for select GM rear-wheel-drive applications with the R4 compressor. It is built for 1985-1988 Chevrolet Monte Carlo, 1985-1988 Oldsmobile Cutlass and Cutlass Supreme, 1985-1986 Oldsmobile Cutlass Salon, 1986-1987 Buick Regal, 1986-1987 Chevrolet El Camino, and 1986-1987 Pontiac Grand Prix applications listed below.

Part number 2025N is a complete A/C compressor kit solution for vehicles that need compressor replacement along with related system service components. Four Seasons PAC-Kit w/ New Compressor line focuses on application-specific HVAC repair for older GM platforms with R4 compressor configurations.

Key Features

  • Four Seasons A/C Compressor Kit for select GM R4 compressor applications
  • Includes a new compressor, accumulator, orifice, flush, and oil
  • Application-specific fitment for 1985-1988 Chevrolet Monte Carlo and related GM models
  • Built for vehicles with 9 o'clock coil configurations and listed pulley requirements where noted
  • Part number 2025N for catalog and service reference

Detailed Description

This Four Seasons 2025N PAC-Kit w/ New Compressor is intended for older GM vehicles that use the R4 compressor platform. It is listed for 1988 Chevrolet Monte Carlo with R4 compressor, 5" diameter pulley, 9 o'clock coil; 1986-1988 Chevrolet Monte Carlo with R4 compressor and 9 o'clock coil; 1988 Oldsmobile Cutlass Supreme with R4 compressor and 9 o'clock coil; 1985-1986 Oldsmobile Cutlass Supreme with R4 compressor and 9 o'clock coil; 1986-1987 Buick Regal with R4 compressor and Canada emissions; 1986-1987 Chevrolet El Camino with R4 compressor and 9 o'clock coil; 1987 Chevrolet Monte Carlo with R4 compressor, 9 o'clock coil, and 5.5" diameter pulley; 1987 Oldsmobile Cutlass, Cutlass Salon, and Cutlass Supreme with R4 compressor, 5" diameter pulley, and 9 o'clock coil; 1987 Pontiac Grand Prix with R4 compressor and 5" diameter pulley; 1985-1986 Oldsmobile Cutlass and Cutlass Salon with R4 compressor and 9 o'clock coil; and 1986 Pontiac Grand Prix with R4 compressor.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

  • Weak or failed A/C compressor operation
  • Noisy compressor performance in R4-equipped systems
  • Loss of cooling output in Chevrolet Monte Carlo and Oldsmobile Cutlass applications
  • System contamination after compressor failure
  • Restricted refrigerant flow related to worn service components

Installation Notes and Tips

Verify the compressor style, pulley diameter, and coil position before ordering. This kit is listed for specific R4 compressor configurations, so matching the vehicle’s existing HVAC setup is important for correct fitment. Flush the system thoroughly before installation and follow the vehicle service procedure for oil charge and component replacement.

Quality Assurance

Four Seasons PAC-Kit w/ New Compressor products are cataloged for application-specific HVAC repair on listed GM vehicles. Part number 2025N is identified for direct service use on the fitments shown above.

This part fits 28 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersPositionNotes
1988ChevroletMonte Carlo—5.0LV8N/AFits vehicles with R4 Compressor, 5" Diameter Pulley, 9 O'Clock Coil; includes new compressor, accumulator, orifice, flush, and oil; PAC-Kit w/ New Compressor
1988ChevroletMonte Carlo—4.3LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1988OldsmobileCutlass Supreme—5.0LV8N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1987BuickRegalCoupe5.0LV8N/Aw/ R4 Compressor; Canada Emissions; Compressor w/ 9 O'Clk Coil; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1987ChevroletEl Camino———N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1987ChevroletMonte Carlo—5.0LV8N/Aw/ R4 Compressor; Compressor w/ 9 O'Clk Coil; Compressor w/ 5.5" Dia. Pulley; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1987ChevroletMonte Carlo—4.3LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1987ChevroletMonte Carlo—3.8LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1987OldsmobileCutlass———N/AFits vehicles with R4 Compressor, 5" Diameter Pulley, 9 O'Clock Coil; includes new compressor, accumulator, orifice, flush, and oil; PAC-Kit w/ New Compressor
1987OldsmobileCutlass Salon—5.0LV8N/AFits vehicles with R4 Compressor, 5" Diameter Pulley, 9 O'Clock Coil; includes new compressor, accumulator, orifice, flush, and oil; PAC-Kit w/ New Compressor
1987OldsmobileCutlass Supreme—5.0LV8N/AFits vehicles with R4 Compressor, 5" Diameter Pulley, 9 O'Clock Coil; includes new compressor, accumulator, orifice, flush, and oil; PAC-Kit w/ New Compressor
1987PontiacGrand Prix—5.0LV8N/Aw/ R4 Compressor; Compressor w/ 5" Dia. Pulley; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1987PontiacGrand Prix—4.3LV6N/Aw/ R4 Compressor; Compressor w/ 5" Dia. Pulley; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1986BuickRegalCoupe5.0LV8N/Aw/ R4 Compressor; Canada Emissions; Compressor w/ 9 O'Clk Coil; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1986ChevroletEl Camino———N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986ChevroletMonte Carlo—5.0LV8N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986ChevroletMonte Carlo—4.3LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986ChevroletMonte Carlo—3.8LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986OldsmobileCutlass———N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986OldsmobileCutlass Salon—3.8LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986OldsmobileCutlass Salon—5.0LV8N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986OldsmobileCutlass Supreme—5.0LV8N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986OldsmobileCutlass Supreme—3.8LV6N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1986PontiacGrand Prix—5.0LV8N/Aw/ R4 Compressor; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1986PontiacGrand Prix—4.3LV6N/Aw/ R4 Compressor; 58228 (New Compressor), 33185 (Accum), 38623 (Orifice), 69991 (Flush), 59003 (Oil); PAC-Kit w/ New Compressor
1985OldsmobileCutlass———N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1985OldsmobileCutlass Salon—5.0LV8N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
1985OldsmobileCutlass Supreme—5.0LV8N/AFits models with R4 compressor, 9 O'Clock coil, and includes new compressor, accumulator, orifice, flush, and oil.; PAC-Kit w/ New Compressor
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
CB1286P