--- title: "idler pulley kit — Niche Verdict: Skip it (53/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/idler-pulley-kit" last_updated: "2026-07-10T00:53:44.250Z" locale: en meta: description: "a small market ($65K/yr) — idler pulley kit doesn't clear our bar today." "og:description": "a small market ($65K/yr) — idler pulley kit doesn't clear our bar today." "og:title": "idler pulley kit — Niche Verdict: Skip it (53/100) | Amazon United States - Flapen" --- Back to Flapen home # **idler pulley kit** **Skip it****53/100 ** a small market ($65K/yr) — idler pulley kit doesn't clear our bar today. **Market/yr** **$65K** **Growth (1y)** **+250.5%** **Products** **106** **Brands** **43** was 22 a year ago **Sellers** **151** **Price range** **$7.31–$113.91** **Returns** **7.1%** **Rating** **4.5★** **Skip it** Scored 53/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **3** ×0.30 Growth **82** ×0.30 Competition **96** ×0.20 Quality gap **44** ×0.10 Returns **39** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +250.5% year over year. 3K1KSpike '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND No pronounced peak months · busiest ÷ quietest = 1.3× ## **Competition** - ACDelco15% - Dorman14% - Gates8% - A-Premium6% - GM GENUINE PARTS6% - URO Parts5% - Other (37 brands)47% Clicks spread well past the top 5 (19% combined) — an open shelf where new products get seen. 43 brands and 151 sellers compete here. **Brands** **43 **▲rising was 22 a year ago **Sellers** **151** **Top 5 brand share** **48%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![ACDelco Gold 38001 (88909582) Idler Pulley](https://m.media-amazon.com/images/I/41fQW8sIgbL.jpg) [**ACDelco Gold 38001 (88909582) Idler Pulley**](https://www.amazon.com/dp/B000C9KQSA) ACDelco$19.724.6★2,4996%▼falling 2 ![GM Genuine Parts 93740746 Alternator Pulley](https://m.media-amazon.com/images/I/31zDVdNkOhL.jpg) [**GM Genuine Parts 93740746 Alternator Pulley**](https://www.amazon.com/dp/B00S0N2AMK) GM GENUINE PARTS$8.644.2★824%▼falling 3 ![Dorman 419-5007 Accessory Drive Belt Idler Pulley Compatible with Select Models](https://m.media-amazon.com/images/I/51mRCylt9-L.jpg) [**Dorman 419-5007 Accessory Drive Belt Idler Pulley Compatible with Select Models**](https://www.amazon.com/dp/B01D8VIGKS) Dorman$15.844.6★4274%▲rising 4 ![URO Parts 06B903119B Alternator Decoupler Pulley](https://m.media-amazon.com/images/I/41ZXUh67GdL.jpg) [**URO Parts 06B903119B Alternator Decoupler Pulley**](https://www.amazon.com/dp/B06XGNDVTT) URO Parts$33.484.6★493%▲rising 5 ![Dorman 419-610 Accessory Drive Belt Tensioner Pulley Compatible with Select Models](https://m.media-amazon.com/images/I/51WMDD+V1SL.jpg) [**Dorman 419-610 Accessory Drive Belt Tensioner Pulley Compatible with Select Models**](https://www.amazon.com/dp/B003QVIXYU) Dorman$15.794.6★1,7373%▼falling 6 ![Tuff Stuff 7610A Alternator (chrome pulley6 groove)](https://m.media-amazon.com/images/I/41iZMPXNFlL.jpg) [**Tuff Stuff 7610A Alternator (chrome pulley6 groove)**](https://www.amazon.com/dp/B0184JVP4S) Tuff Stuff$23.174.7★263%—flat 7 ![ACDelco Gold 38082 (89056015) Idler Pulley](https://m.media-amazon.com/images/I/41kkGNNl6fL.jpg) [**ACDelco Gold 38082 (89056015) Idler Pulley**](https://www.amazon.com/dp/B000C9PE9G) ACDelco$27.194.4★3952%▲rising 8 ![ACDelco Gold 38009 (88909590) Flanged Idler Pulley](https://m.media-amazon.com/images/I/41Igq3uJmqL.jpg) [**ACDelco Gold 38009 (88909590) Flanged Idler Pulley**](https://www.amazon.com/dp/B000C9M6EM) ACDelco$16.114.6★1,2912%▼falling 9 ![Gates 38018 Drive Align Belt Drive Idler/Tensioner Pulley](https://m.media-amazon.com/images/I/418H+z9vXJL.jpg) [**Gates 38018 Drive Align Belt Drive Idler/Tensioner Pulley**](https://www.amazon.com/dp/B000C2YAOS) Gates$20.654.6★6602%▲rising 10 ![Aftermarket Replacement Alternator Pulley Fits Delco Generators 12V](https://m.media-amazon.com/images/I/41mKTbVe2pL.jpg) [**Aftermarket Replacement Alternator Pulley Fits Delco Generators 12V**](https://www.amazon.com/dp/B07H3CYQTD) Reliable Aftermarket Parts Our Name Says It All$16.314.4★132%▲rising 11 ![Powermaster 111 Nat. 2 3/8 V-Belt Pulley](https://m.media-amazon.com/images/I/41DsDSdNe9L.jpg) [**Powermaster 111 Nat. 2 3/8 V-Belt Pulley**](https://www.amazon.com/dp/B004C0CO26) Powermaster$24.134.9★212%▲rising 12 ![Motorcraft - GP712 Pulley](https://m.media-amazon.com/images/I/51awvm5gR1L.jpg) [**Motorcraft - GP712 Pulley**](https://www.amazon.com/dp/B000JZMYAU) Motorcraft$12.114.3★712%—flat 13 ![Alternator Generator Belt Pulley 3/8 7/16 1/2 in Wide Single 1 Groove Fits Delco](https://m.media-amazon.com/images/I/41mKTbVe2pL.jpg) [**Alternator Generator Belt Pulley 3/8 7/16 1/2 in Wide Single 1 Groove Fits Delco**](https://www.amazon.com/dp/B0CMG797JH) Reliable Aftermarket Parts Our Name Says It All$16.274.8★102%▲rising 14 ![Dorman 300-861 Alternator Pulley Compatible with Select Models](https://m.media-amazon.com/images/I/61TAzlTgyOL.jpg) [**Dorman 300-861 Alternator Pulley Compatible with Select Models**](https://www.amazon.com/dp/B00TEFL1O6) Dorman$55.084.5★362%▼falling 15 ![Gates 36299 Idler Pulley](https://m.media-amazon.com/images/I/51bGevLCPDL.jpg) [**Gates 36299 Idler Pulley**](https://www.amazon.com/dp/B001UCBJM0) Gates$29.664.7★7832%—flat **~~Showing 15 of 106 — show all ~~** ## **Product shelf** All 106 tracked products in this niche. Top sellersNewestTrending [![ACDelco Gold 38001 (88909582) Idler Pulley](https://m.media-amazon.com/images/I/41fQW8sIgbL.jpg)**ACDelco Gold 38001 (88909582) Idler Pulley** ACDelco**$19.72**4.6★2,499 reviews](https://www.amazon.com/dp/B000C9KQSA) [![GM Genuine Parts 93740746 Alternator Pulley](https://m.media-amazon.com/images/I/31zDVdNkOhL.jpg)**GM Genuine Parts 93740746 Alternator Pulley** GM GENUINE PARTS**$8.64**4.2★82 reviews](https://www.amazon.com/dp/B00S0N2AMK) [![Dorman 419-5007 Accessory Drive Belt Idler Pulley Compatible with Select Models](https://m.media-amazon.com/images/I/51mRCylt9-L.jpg)**Dorman 419-5007 Accessory Drive Belt Idler Pulley Compatible with Select Models** Dorman**$15.84**4.6★427 reviews](https://www.amazon.com/dp/B01D8VIGKS) [![URO Parts 06B903119B Alternator Decoupler Pulley](https://m.media-amazon.com/images/I/41ZXUh67GdL.jpg)**URO Parts 06B903119B Alternator Decoupler Pulley** URO Parts**$33.48**4.6★49 reviews](https://www.amazon.com/dp/B06XGNDVTT) [![Dorman 419-610 Accessory Drive Belt Tensioner Pulley Compatible with Select Models](https://m.media-amazon.com/images/I/51WMDD+V1SL.jpg)**Dorman 419-610 Accessory Drive Belt Tensioner Pulley Compatible with Select Models** Dorman**$15.79**4.6★1,737 reviews](https://www.amazon.com/dp/B003QVIXYU) [![Tuff Stuff 7610A Alternator (chrome pulley6 groove)](https://m.media-amazon.com/images/I/41iZMPXNFlL.jpg)**Tuff Stuff 7610A Alternator (chrome pulley6 groove)** Tuff Stuff**$23.17**4.7★26 reviews](https://www.amazon.com/dp/B0184JVP4S) [![ACDelco Gold 38082 (89056015) Idler Pulley](https://m.media-amazon.com/images/I/41kkGNNl6fL.jpg)**ACDelco Gold 38082 (89056015) Idler Pulley** ACDelco**$27.19**4.4★395 reviews](https://www.amazon.com/dp/B000C9PE9G) [![ACDelco Gold 38009 (88909590) Flanged Idler Pulley](https://m.media-amazon.com/images/I/41Igq3uJmqL.jpg)**ACDelco Gold 38009 (88909590) Flanged Idler Pulley** ACDelco**$16.11**4.6★1,291 reviews](https://www.amazon.com/dp/B000C9M6EM) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Size-Overall**33% *“Fits and works as it should,”* **Quality-Overall**24% *“They are good quality parts very happy with the with them so far”* **Value For Money**6% *“Good price”* **Advertised Vs Actual Product**6% *“As advertised”* **Assembly/Installation**6% *“took about 20 minutes to install works great”* **Noise Level**5% *“All quiet”* **Efficiency**5% *“fixed my problem”* **Ease Of Use**2% *“Easy fix”* **Friction**2% *“Tensioner and pulley are good”* **Durability**1% *“very durable”* ### **What buyers complain about ** **Size-Overall**20% *“Does not fit”* **Quality-Overall**13% *“Poor quality”* **Compatibility-Overall**12% *“Wont work on 3.5 Toyota”* **Noise Level**11% *“Noisy”* **Advertised Vs Actual Product**7% *“Not exactly what was pictured”* **Durability**7% *“Failed in 4 months”* **Mounting**5% *“stress cracks threw mounting area”* **Defective Material/Parts**3% *“Worng parts hard return them”* **Value For Money**2% *“Dayco gets even cheaper”* **Metal Quality**2% *“I would expect ACDelco Gold to be top line”* #### **Top return reasons**- Size-Overall45% - Compatibility-Overall13% - Advertised Vs Actual Product10% - Defective Material/Parts8% - Noise Level4% - Product Condition3% - Assembly/Installation3% - Value For Money2% - Functionality-Overall2% - Width2%