Continental 49954 Alternator Decoupler Pulley
OE Quality 60-Day Returns
Continental

Continental 49954 Alternator Decoupler Pulley

Brand Continental 49954
Pulley 1 Flanged 1.79
Component Type N
Pulley 1 Bore Diameter 2.36
Pulley 1 Outside Diameter 6
Pulley 1 Width 0.670
Pulley 1 Material Grooved
Pulley 1 Groove Quantity Steel
Pulley Surface Type Flanged
Fits Cadillac, Chevrolet, and GMC · 133 vehicles

One-way clutch. Lets the alternator coast freely when belt speed drops suddenly.

Patented torsion spring. Tuned to each application for precise decoupler performance.

Steel grooved pulley. Flanged surface helps maintain secure belt engagement.

Cross-references Gates 37205P and 12645462 for the same application. See all 2.

$117.12Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $117.12
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Alternator Decoupler Pulley options

Continental Alternator Decoupler Pulley 49954

Continental 49954 is an alternator decoupler pulley for GM charging system applications that use a grooved pulley profile. It uses an internal torsion spring tuned to the application and a one-way clutch that lets the alternator coast when belt speed drops suddenly, such as during engine shutdown or a transmission shift.

Key Features

  • Alternator decoupler pulley for electrical, charging, and starting system repair
  • Application-specific internal torsion spring for controlled pulley response
  • One-way clutch allows alternator coast-down during abrupt belt speed changes
  • Grooved pulley design with flanged surface type
  • Continental part number 49954 for direct replacement matching
  • Cross-references Gates 37205P for the same application

Product Details

This Continental alternator decoupler pulley is built for vehicles that rely on a grooved alternator pulley to manage belt dynamics and reduce stress in the charging system. The pulley measures 6 inches outside diameter, 2.36 inches bore diameter, 1.79 inches flanged dimension, and 0.670 inches width. It is a steel grooved pulley with a flanged surface type, making it a direct-fit service part for select Chevrolet, GMC, and Cadillac models. Use Continental 49954 when replacing a worn or noisy decoupler pulley on applications such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade.

What It Helps Fix

  • Alternator pulley noise from clutch wear or internal spring fatigue
  • Belt vibration during engine shutdown or rapid speed changes
  • Charging system stress caused by a failing decoupler pulley
  • Accessory drive instability on grooved pulley applications
  • Reduced alternator coast-down performance after transmission shifts

Installation Notes

Verify alternator amperage and pulley style before ordering, since fitment varies by vehicle and charging system configuration. This part fits 2014-2016 Chevrolet Silverado 1500, 2014-2016 GMC Sierra, 2014-2016 GMC Sierra 1500, 2015-2019 Chevrolet Silverado 2500 HD, 2015-2019 Chevrolet Silverado 3500 HD, 2015-2019 Cadillac Escalade, 2015-2019 Cadillac Escalade ESV, 2015-2019 GMC Sierra 2500 HD, 2015-2019 GMC Sierra 3500 HD, 2015-2019 GMC Yukon, 2015-2019 GMC Yukon XL, 2016-2019 Cadillac CTS, 2016-2022 Chevrolet Camaro, 2017-2019 Chevrolet Express 2500, 2017-2019 Chevrolet Express 3500, 2017-2019 GMC Savana 2500, 2017-2019 GMC Savana 3500, 2017-2018 Chevrolet Silverado 1500, 2017-2018 GMC Sierra 1500, 2017 Chevrolet Silverado 2500, 2017 GMC Sierra, 2018 Chevrolet Suburban 3500 HD, 2018-2019 Chevrolet Tahoe, 2019 Chevrolet Silverado 1500, 2019 Chevrolet Silverado 1500 LD, 2019 GMC Sierra 1500, 2019 GMC Sierra 1500 Limited, 2020 Cadillac Escalade, 2020 Cadillac Escalade ESV, 2020 Chevrolet Express 2500, 2020 Chevrolet Express 3500, 2020 Chevrolet Silverado 2500 HD, 2020 Chevrolet Silverado 3500 HD, 2020 Chevrolet Tahoe, 2020 GMC Savana 2500, 2020 GMC Savana 3500, 2020 GMC Sierra 2500 HD, 2020 GMC Sierra 3500 HD, 2020 GMC Yukon, 2020 GMC Yukon XL, 2021-2025 Chevrolet Silverado 2500 HD, 2021-2025 Chevrolet Silverado 3500 HD, and 2021-2025 Chevrolet Silverado 3500 HD with grooved pulley applications. Confirm the alternator amperage notes where listed, including 170 amp and 220 amp alternator configurations.

Quality Assurance

Continental manufactures this decoupler pulley to OE-style specifications for the listed GM applications. Part number 49954 is built for direct replacement use in compatible Chevrolet Silverado, GMC Sierra, and Cadillac Escalade charging system repairs.

Related reading

This part fits 133 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2025ChevroletSilverado 2500 HD6.6LV8FLEXN/AGrooved Pulley
2025ChevroletSilverado 3500 HD6.6LV8FLEXN/AGrooved Pulley
2024ChevroletSilverado 2500 HD6.6LV8FLEXN/AGrooved Pulley
2024ChevroletSilverado 3500 HD6.6LV8FLEXN/AGrooved Pulley
2023ChevroletSilverado 2500 HD6.6LV8FLEXN/AGrooved Pulley
2023ChevroletSilverado 3500 HD6.6LV8FLEXN/AGrooved Pulley
2022ChevroletCamaro6.2LV8—N/AGrooved Pulley
2022ChevroletSilverado 2500 HD6.6LV8FLEXN/AGrooved Pulley
2022ChevroletSilverado 3500 HD6.6LV8FLEXN/AGrooved Pulley
2021ChevroletCamaro6.2LV8—N/AGrooved Pulley
2021ChevroletSilverado 2500 HD6.6LV8FLEXN/AGrooved Pulley
2021ChevroletSilverado 3500 HD6.6LV8FLEXN/AGrooved Pulley
2020CadillacEscalade6.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020CadillacEscalade ESV6.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020ChevroletCamaro6.2LV8—N/AGrooved Pulley
2020ChevroletExpress 25002.8LL4—N/AW/ 220 Amp. Alt.; Grooved Pulley
2020ChevroletExpress 35002.8LL4—N/AW/ 220 Amp. Alt.; Grooved Pulley
2020ChevroletSilverado 2500 HD6.6LV8GASN/AW/ 220 Amp. Alt.; Grooved Pulley
2020ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/ 220 Amp. Alt.; Grooved Pulley
2020ChevroletSilverado 3500 HD6.6LV8GASN/AW/ 220 Amp. Alt.; Grooved Pulley
2020ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/ 220 Amp. Alt.; Grooved Pulley
2020ChevroletTahoe5.3LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020ChevroletTahoe6.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020GMCSavana 25002.8LL4—N/AW/ 220 Amp. Alt.; Grooved Pulley
2020GMCSavana 35002.8LL4—N/AW/ 220 Amp. Alt.; Grooved Pulley
2020GMCSierra 2500 HD6.6LV8GASN/AW/ 220 Amp. Alt.; Grooved Pulley
2020GMCSierra 2500 HD6.6LV8DIESELN/AW/ 220 Amp. Alt.; Grooved Pulley
2020GMCSierra 3500 HD6.6LV8GASN/AW/ 220 Amp. Alt.; Grooved Pulley
2020GMCSierra 3500 HD6.6LV8DIESELN/AW/ 220 Amp. Alt.; Grooved Pulley
2020GMCYukon5.3LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020GMCYukon6.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020GMCYukon XL5.3LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2020GMCYukon XL6.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2019CadillacCTS6.2LV8—N/AGrooved Pulley
2019CadillacEscalade6.2LV8—N/AGrooved Pulley
2019CadillacEscalade ESV6.2LV8—N/AGrooved Pulley
2019ChevroletCamaro6.2LV8—N/AGrooved Pulley
2019ChevroletExpress 25002.8LL4—N/AGrooved Pulley
2019ChevroletExpress 35002.8LL4—N/AGrooved Pulley
2019ChevroletSilverado 15005.3LV8—N/AGrooved Pulley
2019ChevroletSilverado 1500 LD5.3LV8—N/AGrooved Pulley
2019ChevroletSilverado 2500 HD6.6LV8—N/AGrooved Pulley
2019ChevroletSilverado 3500 HD6.6LV8—N/AGrooved Pulley
2019ChevroletTahoe5.3LV8—N/AGrooved Pulley
2019GMCSavana 25002.8LL4—N/AGrooved Pulley
2019GMCSavana 35002.8LL4—N/AGrooved Pulley
2019GMCSierra 15005.3LV8—N/AGrooved Pulley
2019GMCSierra 1500 Limited5.3LV8—N/AGrooved Pulley
2019GMCSierra 2500 HD6.6LV8—N/AGrooved Pulley
2019GMCSierra 3500 HD6.6LV8—N/AGrooved Pulley
2019GMCYukon5.3LV8—N/AGrooved Pulley
2019GMCYukon XL5.3LV8—N/AGrooved Pulley
2018CadillacCTS6.2LV8—N/AGrooved Pulley
2018CadillacEscalade6.2LV8—N/AGrooved Pulley
2018CadillacEscalade ESV6.2LV8—N/AGrooved Pulley
2018ChevroletCamaro6.2LV8—N/AGrooved Pulley
2018ChevroletExpress 25002.8LL4—N/AGrooved Pulley
2018ChevroletExpress 35002.8LL4—N/AGrooved Pulley
2018ChevroletSilverado 15004.3LV6—N/AW/ 170 Amp Alt.; Grooved Pulley
2018ChevroletSilverado 15005.3LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2018ChevroletSilverado 15006.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2018ChevroletSilverado 2500 HD6.6LV8—N/AGrooved Pulley
2018ChevroletSilverado 3500 HD6.6LV8—N/AGrooved Pulley
2018ChevroletSuburban 3500 HD6.0LV8—N/AGrooved Pulley
2018ChevroletTahoe5.3LV8—N/AGrooved Pulley
2018GMCSavana 25002.8LL4—N/AGrooved Pulley
2018GMCSavana 35002.8LL4—N/AGrooved Pulley
2018GMCSierra 15004.3LV6—N/AW/ 170 Amp Alt.; Grooved Pulley
2018GMCSierra 15005.3LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2018GMCSierra 15006.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2018GMCSierra 2500 HD6.6LV8—N/AGrooved Pulley
2018GMCSierra 3500 HD6.6LV8—N/AGrooved Pulley
2018GMCYukon5.3LV8—N/AGrooved Pulley
2018GMCYukon XL5.3LV8—N/AGrooved Pulley
2017CadillacCTS6.2LV8—N/AGrooved Pulley
2017CadillacEscalade6.2LV8—N/AGrooved Pulley
2017CadillacEscalade ESV6.2LV8—N/AGrooved Pulley
2017ChevroletCamaro6.2LV8—N/AGrooved Pulley
2017ChevroletExpress 25002.8LL4—N/AGrooved Pulley
2017ChevroletExpress 35002.8LL4—N/AGrooved Pulley
2017ChevroletSilverado 15004.3LV6—N/AW/ 170 Amp Alt.; Grooved Pulley
2017ChevroletSilverado 15006.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2017ChevroletSilverado 25004.3LV6—N/AW/ 170 Amp Alt.; Grooved Pulley
2017ChevroletSilverado 2500 HD6.6LV8—N/AGrooved Pulley
2017ChevroletSilverado 3500 HD6.6LV8—N/AGrooved Pulley
2017GMCSavana 25002.8LL4—N/AGrooved Pulley
2017GMCSavana 35002.8LL4—N/AGrooved Pulley
2017GMCSierra6.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2017GMCSierra 15004.3LV6—N/AW/ 170 Amp Alt.; Grooved Pulley
2017GMCSierra 15006.2LV8—N/AW/ 170 Amp Alt.; Grooved Pulley
2017GMCSierra 2500 HD6.6LV8—N/AGrooved Pulley
2017GMCSierra 3500 HD6.6LV8—N/AGrooved Pulley
2017GMCYukon5.3LV8—N/AGrooved Pulley
2017GMCYukon XL6.2LV8—N/AGrooved Pulley
2016CadillacCTS6.2LV8—N/AGrooved Pulley
2016CadillacEscalade6.2LV8—N/AGrooved Pulley
2016CadillacEscalade ESV6.2LV8—N/AGrooved Pulley
2016ChevroletCamaro6.2LV8—N/AGrooved Pulley
2016ChevroletSilverado 15004.3LV6—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016ChevroletSilverado 15005.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016ChevroletSilverado 15006.2LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016ChevroletSilverado 2500 HD6.6LV8—N/AGrooved Pulley
2016ChevroletSilverado 3500 HD6.6LV8—N/AGrooved Pulley
2016GMCSierra5.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016GMCSierra 15004.3LV6—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016GMCSierra 15005.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016GMCSierra 15006.2LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2016GMCSierra 2500 HD6.6LV8—N/AGrooved Pulley
2016GMCSierra 3500 HD6.6LV8—N/AGrooved Pulley
2016GMCYukon5.3LV8—N/AGrooved Pulley
2016GMCYukon XL5.3LV8—N/AGrooved Pulley
2015CadillacEscalade6.2LV8—N/AGrooved Pulley
2015CadillacEscalade ESV6.2LV8—N/AGrooved Pulley
2015ChevroletSilverado 15004.3LV6—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015ChevroletSilverado 15005.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015ChevroletSilverado 15006.2LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015ChevroletSilverado 2500 HD6.6LV8—N/AGrooved Pulley
2015ChevroletSilverado 3500 HD6.6LV8—N/AGrooved Pulley
2015GMCSierra5.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015GMCSierra 15004.3LV6—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015GMCSierra 15005.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015GMCSierra 15006.2LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2015GMCSierra 2500 HD6.6LV8—N/AGrooved Pulley
2015GMCSierra 3500 HD6.6LV8—N/AGrooved Pulley
2015GMCYukon5.3LV8—N/AGrooved Pulley
2015GMCYukon XL5.3LV8—N/AGrooved Pulley
2014ChevroletSilverado 15004.3LV6—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2014ChevroletSilverado 15005.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2014ChevroletSilverado 15006.2LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2014GMCSierra5.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2014GMCSierra 15004.3LV6—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2014GMCSierra 15005.3LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
2014GMCSierra 15006.2LV8—N/AW/ 170 Amp & 220 Amp Alternator; Grooved Pulley
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Gates — 37205P12645462