Our rankings are generated through the algorithmic analysis of thousands of customer reviews about products, brands, merchant customer service levels, popularity trends, and more. We use advanced technology, including AI, to help process and organize this information at scale, supporting our analysis with greater speed and consistency. The rankings reflect our opinion and should be a good starting point for shopping.
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10 Best automotive performance transmission hard parts of 2026
Explore top picks
Best Choice1
Pacific Performance Engineering9.7Exceptional
PPE PERFORMANCE TRANSMISSION COOLER FOR 2001 2002 2003 CHEVY GMC LB7/LLY & LBZ/LMM 124060000
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Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
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Thousands of users trust our site daily- Based on millions of stores and reviews
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Value for Money2
Hihitomorrow9.6Exceptional
3.1108G General Transmission Mount Performance Polyurethane Mounts Bracket Set Fit for GM Cars and Trucks TH350, TH400, 700R4, and for Chevy Turbo Most Transmissions
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3
WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC9.3Excellent
1982-2013 700R4 4L60E 4L65E "THE BEAST" Heavy Duty Reaction Sun Gear Shell
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4
Pacific Performance Engineering9.0Excellent
Pacific Performance Engineering PPE Automatic Transmission Fluid Thermal Bypass Valve Compatible with 2019-2024 GM 3.0L Duramax 10L80 125069000
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5
cycwer8.7Very Good
7Pcs A750E A750F Transmission Solenoid Kit, Fit for LX470 GS470 A750E A750F
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6
JY PERFORMANCE8.4Good
Universal Transmission Holding Fixture Base Holder
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7
STILEALUS8.2Good
Shifter Linkage Kit Fits for Hurst Shifters With Muncie Transmission Replacement of 3733163
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8
REIN AUTOMOTIVE8.1Good
Rein Automotive RTL0004 Automatic Transmission Filter Kit with Gasket and Bolts
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9
WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC7.8Good
WIT WHATEVER IT TAKES TRANSMISSION PARTS, INC Superior 6L80 6L90 8L90 Sure Cool System Upgrade STL010
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manufacturer part number: STL010
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item weight: 3.52 ounces
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customer reviews:4.8 4.8 out of 5 stars 637 ratings 4.8 out of 5 stars
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package dimensions: 3.15 x 2.99 x 1.26 inches
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asin:B0BCL9M23T
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10
SUKATC7.7Good
SUKATC 25615-5T0-004 Car Transmission Filler Cap Compatible with Honda 2014-2025 Civic City HR-V
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