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  • $50.23 MSRP: $94.80
    You Save: $44.57 (48%)
    Product Specifications
    • Other Names: Idler Pulley, Serpentine Idler Pulley
    • Item Dimensions: 7.1 x 4.1 x 4.1 inches
    • Item Weight: 1.20 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 12557819
    • Part Description: GMC K3500 Serpentine Idler Pulley
    More Info
  • Dorman OE Solutions Vacuum Pump Pulley for GMC K3500 - 300-702
    $80.03
    Product Specifications
    • Belt Type: Serpentine
    • Color: Black
    • Installation Hardware Included: No
    • Installation Instructions Included: No
    • Item Grade: Standard Replacement
    • Material: Steel
    • Mounting Hole Quantity: 1
    • OE Part Number: 15589757
    • Outside Diameter: 4.91
    • Package Contents: 1 Vacuum Pump Pulley
    • Pulley Type/Grooves: Smooth
    • UPC: 019495240006
    • Width: 0.98
    • Part Description: GMC K3500 OE Solutions Vacuum Pump Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 36177
    $36.61
    Product Specifications
    • Bearing Bore Inside Diameter 1: 12 mm
    • Contact Surface: V-Ribbed Grooved
    • Material: Steel
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 85 mm
    • Pulley 1 Flanged: Yes
    • UPC: 072053392852
    • Width: 29 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC K3500 - 89170
    $35.76
    Product Specifications
    • Bearing Inner Diameter 1: 12
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: N
    • Groove Quantity: 6
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 90
    • Pulley Width: 30
    • UPC: 036687655264
    • Part Description: GMC K3500 No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45982
    $24.73
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 0.625
    • Belt Width MM: 15.875
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: 4
    • I.D. MM: 17
    • Inside Diameter: 0.6875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 95.250
    • Outside Diameter: 3.750
    • Pulley Type: Idler Pulley
    • Pulley Width IN: .69
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459823
    • Width: 22.2
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38015
    $27.82
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Thermoplastic
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 76 mm
    • Pulley 1 Flanged: No
    • UPC: 072053472349
    • Width: 26 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty New Style Idler Tensioner Pulley for GMC K3500 - 89006
    $20.80
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 90
    • Pulley Width: 30
    • UPC: 038244156948
    • Part Description: GMC K3500 No Slack Light Duty New Style Idler Tensioner Pulley
    More Info
  • Four Seasons Idler Tensioner Pulley for GMC K3500 - 45935
    $21.77
    Product Specifications
    • Belt Type: Back Idler
    • Belt Width IN: 1.000
    • Belt Width MM: 28.575
    • Bore Dia. IN: .472
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 32.0
    • Inside Diameter: 1.18
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 90.488
    • Outside Diameter: 3.500
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1.130
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361030800
    • Width: 30
    • Part Description: GMC K3500 Idler Tensioner Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38001
    $19.83
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 90 mm
    • Pulley 1 Flanged: No
    • UPC: 072053415254
    • Width: 30 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC K3500 - 89007
    $17.51
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: Y
    • Material: Steel
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 76
    • Pulley Width: 31
    • UPC: 038244156955
    • Part Description: GMC K3500 No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45066
    $18.07
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 0.750
    • Belt Width MM: 19.050
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 17
    • Inside Diameter: 0.671875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 88.900
    • Outside Diameter: 3.500
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361450660
    • Width: 25.4
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38006
    $20.09
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 2.99"
    • Pulley 1 Flanged: No
    • UPC: 072053415308
    • Width: 30.5 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • $2.93 MSRP: $5.51
    You Save: $2.58 (47%)
    Product Specifications
    • Other Names: Idler Pulley
    • Item Dimensions: 4.4 x 4.4 x 1.6 inches
    • Item Weight: 1.10 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: GMC K3500 Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC K3500 - 89015
    $16.34
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: N
    • Groove Quantity: 6
    • Material: Polymer
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 70
    • Pulley Width: 28.3
    • UPC: 036687135353
    • Part Description: GMC K3500 No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45010
    $16.40
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 0.875
    • Belt Width MM: 22.225
    • Bore Dia. IN: .69
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 17.463
    • Inside Diameter: 0.6875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 109.538
    • Outside Diameter: 4.3125
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361450103
    • Width: 25.4
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38024
    $19.70
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: V-Ribbed
    • Material: Thermoplastic
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 109 mm
    • Pulley 1 Flanged: Yes
    • UPC: 072053542004
    • Width: 26.3 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC K3500 - 89009
    $14.52
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: N
    • Groove Quantity: 6
    • Material: Polymer
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 76
    • Pulley Width: 28.7
    • UPC: 038244156979
    • Part Description: GMC K3500 No Slack Light Duty Idler Tensioner Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45990
    $17.37
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 1.000
    • Belt Width MM: 25.400
    • Bore Dia. IN: .47
    • Color: Black
    • Groove Quantity: Smooth
    • I.D. MM: 12.0
    • Inside Diameter: 0.46875
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 88.900
    • Outside Diameter: 3.500
    • Pulley Type: Back Idler
    • Pulley Width IN: 1
    • Pulley Width MM: 25.4
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459908
    • Width: 25.4
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38020
    $18.48
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: Smooth/Backside
    • Material: Steel
    • Number of Grooves: 0
    • Number Of Pulleys: 1
    • Outside Diameter: 3.54"
    • Pulley 1 Flanged: No
    • UPC: 072053525748
    • Width: 30.5 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • $66.46 MSRP: $125.42
    You Save: $58.96 (48%)
    Product Specifications
    • Other Names: Idler Pulley, Pulley, Serpentine Idler Pulley
    • Item Dimensions: 4.3 x 4.3 x 2.1 inches
    • Item Weight: 0.90 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 14102597
    • Part Description: GMC K3500 Serpentine Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38019
    $17.63
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: V-Ribbed Grooved
    • Material: Thermoplastic
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 3.54"
    • Pulley 1 Flanged: Yes
    • UPC: 072053557510
    • Width: 26.3 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • $54.91 MSRP: $103.62
    You Save: $48.71 (48%)
    Product Specifications
    • Other Names: Idler Pulley, Serpentine Idler Pulley
    • Item Dimensions: 3.5 x 3.1 x 3.1 inches
    • Item Weight: 0.70 Pounds
    • Fitment Type: Direct Replacement
    • Replaces: 10239930
    • Part Description: GMC K3500 Serpentine Idler Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45975
    $14.77
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 1.000
    • Belt Width MM: 25.400
    • Bore Dia. IN: .69
    • Color: Black
    • Groove Quantity: Smooth
    • I.D. MM: 17
    • Inside Diameter: 0.6875
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 88.900
    • Outside Diameter: 3.500
    • Pulley Type: Back Idler
    • Pulley Width IN: 1
    • Pulley Width MM: 25.4
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459755
    • Width: 25.4
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Grooved Drive Belt Idler Pulley for GMC K3500 - 38008
    $16.58
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: V-Ribbed Grooved
    • Material: Thermoplastic
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 2.76"
    • Pulley 1 Flanged: Yes
    • UPC: 072053284232
    • Width: 25 mm
    • Part Description: GMC K3500 Drivealign Grooved Drive Belt Idler Pulley
    More Info
  • Four Seasons Back Drive Belt Idler Pulley for GMC K3500 - 45979
    $15.02
    Product Specifications
    • Belt Type: Back Idler
    • Belt Width IN: 1.000
    • Belt Width MM: 25.400
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: Smooth
    • I.D. MM: 17
    • Inside Diameter: 0.6875
    • Material: Steel
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 76.200
    • Outside Diameter: 3.000
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1.18
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459793
    • Width: 30
    • Part Description: GMC K3500 Back Drive Belt Idler Pulley
    More Info
  • Gates Drivealign Drive Belt Idler Pulley for GMC K3500 - 38009
    $16.47
    Product Specifications
    • Bearing Bore Inside Diameter 1: 17 mm
    • Contact Surface: V-Ribbed Grooved
    • Material: Thermoplastic
    • Number of Grooves: 6
    • Number Of Pulleys: 1
    • Outside Diameter: 2.99"
    • Pulley 1 Flanged: Yes
    • UPC: 072053284256
    • Width: 25 mm
    • Part Description: GMC K3500 Drivealign Drive Belt Idler Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45971
    $13.64
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: .88
    • Belt Width MM: 22.4
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 17
    • Inside Diameter: 0.671875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 76.0
    • Outside Diameter: 2.99
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1.13
    • Pulley Width MM: 28.7
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459717
    • Width: 28.7
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45970
    $14.74
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 1.000
    • Belt Width MM: 25.400
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: Smooth
    • I.D. MM: 17
    • Inside Diameter: 0.671875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 95.250
    • Outside Diameter: 3.750
    • Pulley Type: Back Idler
    • Pulley Width IN: 1
    • Pulley Width MM: 25.4
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459700
    • Width: 25.4
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Four Seasons Drive Belt Idler Pulley for GMC K3500 - 45996
    $14.91
    Product Specifications
    • Belt Type: Serpentine
    • Belt Width IN: 0.875
    • Belt Width MM: 22.225
    • Bore Dia. IN: .67
    • Color: Black
    • Groove Quantity: 6
    • I.D. MM: 17
    • Inside Diameter: 0.671875
    • Material: Plastic
    • Meets / Exceeds OEM: Yes
    • Mount Hole Qty: 1
    • Mounting Hardware: Not Included
    • O.D. MM: 69.850
    • Outside Diameter: 2.750
    • Pulley Type: Idler Pulley
    • Pulley Width IN: 1.11
    • Pulley Width MM: Idler / Tensioner Pulley
    • Style: Idler / Tensioner Pulley
    • UPC: 096361459960
    • Width: 28.6
    • Part Description: GMC K3500 Drive Belt Idler Pulley
    More Info
  • Dayco No Slack Light Duty Idler Tensioner Pulley for GMC K3500 - 89012
    $22.75
    Product Specifications
    • Bearing Inner Diameter 1: 17
    • Bearing Width: 12
    • Belt Type: Serpentine
    • Flat: N
    • Groove Quantity: 6
    • Material: Polymer
    • Max Belt Width: 06 Rib
    • Number of Bearings: 1
    • Pulley Outside Diameter: 90
    • Pulley Width: 28.2
    • UPC: 038244528783
    • Part Description: GMC K3500 No Slack Light Duty Idler Tensioner Pulley
    More Info
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About GMC K3500 Idler Pulley

From 1988 through 2002, General Motors manufactured the GMC K3500. The GMC K3500 is a car that consistently provides performance. The brand appeals to drivers with high-quality parts. The idler pulley is essential because it is in charge of routing the timing belt so that it remains in the correct position. GMC K3500's faulty parts can cause overheating, stalling, and a decline in tension.
GMC K3500 stands out for its great parts. However, consumers need a new one if these parts are worn or damaged. The removal process for GMC K3500's idler pulley is as follows: First open the hood, next remove the engine drive belt, then locate the idler pulley, remove the mounting bolt for the idler pulley, and remove the pulley from the engine. An idler pulley should be replaced every 50,000 to 100,000 miles. The vast catalog includes the braking system, the powertrain, the chassis, and other types of crucial parts. Great delivery and online services are offered to car buyers.