Four Seasons 5631N A/C Compressor Kit - Front and Rear
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Four Seasons
 PAC-Kit w/ New Compressor

Four Seasons 5631N A/C Compressor Kit - Front and Rear

Brand Four Seasons 5631N
Position Front and Rear
Product line PAC-Kit w/ New Compressor
Fits Chevrolet and GMC · 37 vehicles

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

A/C compressor kit for restoring cooling performance.

$351.90Free shipping
In stock · usually ships same day before 1pm CST
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Order total $351.90
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Four Seasons PAC-Kit w/ New Compressor 5631N

Four Seasons 5631N is an A/C compressor kit for select 1989-1991 Chevrolet and GMC trucks and SUVs with the LTR4 compressor setup. It is built for front and rear HVAC applications and matches vehicles that use a 4-1/4" diameter pulley.

Key Features

  • Brand: Four Seasons
  • Brand line: PAC-Kit w/ New Compressor
  • Part number: 5631N
  • A/C compressor kit for HVAC service
  • For front and rear applications
  • Fits LTR4 compressor configurations with a 4-1/4" pulley
  • Direct fitment for select Chevrolet Blazer, Chevrolet Suburban, and GMC Jimmy models

Fitment Details

  • Fits 1989-1991 Chevrolet Blazer, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 Chevrolet R1500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 Chevrolet R2500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 Chevrolet V1500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 Chevrolet V2500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 GMC Jimmy, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 GMC R1500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 GMC R2500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 GMC V1500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1989-1991 GMC V2500 Suburban, front and rear, w/ LTR4 compressor; compressor w/ 4-1/4" dia. pulley.
  • Fits 1990 Chevrolet V2500 Suburban, front and rear, w/ LTR4 compressor.

What This Kit Helps Address

  • Loss of cabin cooling from a worn or failed compressor
  • Noisy A/C compressor operation
  • Reduced refrigerant circulation in the HVAC system
  • Service needs on older Chevrolet and GMC A/C systems
  • Fitment issues when replacing an LTR4 compressor with the correct pulley configuration

Installation Notes

Verify the vehicle uses the LTR4 compressor and a 4-1/4" diameter pulley before ordering. This Four Seasons PAC-Kit w/ New Compressor 5631N is listed for front and rear HVAC applications on the vehicles shown above. Confirm all system details against the existing compressor and vehicle build information during service.

Quality Assurance

Four Seasons supplies HVAC service parts for automotive air conditioning repairs. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Related reading

This part fits 37 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1991ChevroletBlazer5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991ChevroletR1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991ChevroletR2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991ChevroletR2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991ChevroletV1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991ChevroletV2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991GMCJimmy5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991GMCR1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991GMCR2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991GMCR2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991GMCV1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1991GMCV2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletBlazer5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletR1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletR2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletR2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletV1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletV2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990ChevroletV2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990GMCJimmy5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990GMCR1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990GMCR2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990GMCR2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990GMCV1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1990GMCV2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989ChevroletBlazer5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989ChevroletR1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989ChevroletR2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989ChevroletR2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989ChevroletV1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989ChevroletV2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989GMCJimmy5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989GMCR1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989GMCR2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989GMCR2500 Suburban7.4LV8Front and Rearw/ LTR4 Compressor; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989GMCV1500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor
1989GMCV2500 Suburban5.7LV8Front and Rearw/ LTR4 Compressor; Compressor w/ 4-1/4" Dia. Pulley; 58937 (New Compressor), 33183 (Accum), 38623 (Orifice), 38683 (Exp Valve), 69991 (Flush Qty.2), 59003 (Oil Qty.2); PAC-Kit w/ New Compressor