Looking for the best Chevy TH-350 rebuild kits? We’ve curated a list of top picks that offer durable materials, precise fit, and pro-level performance to make your rebuild a success.
Rebuilding a Chevy TH-350 transmission? Finding the right parts can feel overwhelming. Our top picks deliver durable materials, precise fit, and pro-level performance.
Trusted by DIYers and mechanics alike, these kits include heavy-duty frictions, leak-proof seals, and easy-to-follow designs. Whether you tow, race, or restore, the best TH-350 rebuild kits ensure your transmission lasts for years.
List of Top 10 Chevy TH-350 Rebuild Kits
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Master Engine Rebuild Kit FITS: 1967-1985 Chevrolet SBC GM 350 5.7L OHV V8 (Truck & Car) |
This Master Engine Rebuild Kit is perfect for car and truck owners with a 1967-1985 Chevrolet SBC GM 350 5.7L OHV V8 engine. It’s ideal for those looking to restore or rebuild their engine. |
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Compatible With: Chevy GM TH350 Alto Transmission Less Steel Rebuild Kit Level 2 |
This product is perfect for DIY mechanics and professional technicians seeking a high-quality, reliable rebuild kit for Chevy GM TH350 transmissions. It includes ALTO high energy green frictions, durable sealing rings, metal seals, gaskets, and all critical parts for a full rebuild, ensuring long-lasting performance and smooth installation. |
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TH350 TH350C Transmission Rebuild kit Heavy Duty Master Kit Stage 4 |
Heavy-duty truck owners and towing vehicle enthusiasts need this kit for tough builds. It includes Alto HEG graphite frictions, premium seals, and full-ring front bands to handle heat and stress. Perfect for GM cars and light trucks (1969–86), it ensures a leak-free, long-lasting rebuild with expert-backed quality. |
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Compatible With: Chevy GM TH350 Alto Transmission Master Rebuild Kit Level 2 |
This kit is perfect for DIY mechanics and auto repair pros rebuilding Chevy GM TH350 transmissions. It includes high energy plates, steels, and all seals for 1969 and newer TH350 models. |
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Turbo TH350/C Automatic Rebuild Kit for GM 1969-1986 |
This rebuild kit is perfect for DIY mechanics and auto repair pros working on older GM vehicles with TH350/C transmissions from 1969-1986. It includes all key parts for a full overhaul, like gaskets, seals, filters, and bushings, to ensure smooth shifts, leak-free performance, and long-term durability. |
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BIGLKNM TH350 Transmission Seal Filter Kit; Automatic Transmission External Gasket Seal Reseal Kit for Turbo 350 TH350 TH350C Rebuild Kit |
This transmission seal kit is perfect for DIY car repairers or mechanics fixing Turbo 350/TH350 transmissions. It includes durable seals, gaskets, and O-rings to stop leaks and ensure a tight, long-lasting fit. |
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345215 Speedometer Housing Gear Seal Kit Compatible with Chevy GM TH350 TH350C Turbo 350 with O-Ring & Metal Seal & Bolts Washers 25513247-7pcs |
This product is perfect for DIY car repair enthusiasts and professional mechanics working on Chevy GM TH350 or Turbo 350 transmissions. It’s ideal for anyone needing to stop oil leaks, replace worn seals, or upgrade their speedometer gear housing with a durable, precise-fit kit that includes all necessary parts. |
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TH350 Turbo 350 Transmission Raybestos Stage 1 Red Less Steel Rebuild Kit |
This rebuild kit is perfect for DIY mechanics and auto shops upgrading TH350 transmissions for performance builds or heavy-duty towing. It includes Raybestos Stage 1 Frictions and a Transtec Gasket Kit to handle higher temperatures and boost durability in street rods, tuner cars, or trucks hauling tough loads. |
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Compatible With: Chevy GM TH350 Alto Red Eagle Less Steel Transmission Rebuild Kit Level 2 |
This transmission rebuild kit is perfect for mechanics and DIY car lovers fixing Chevy GM TH350 models. It includes Red Eagle frictions, Kolene steels, and all seals, gaskets, and bushings needed for reliable, long-lasting repairs. Designed for 1969 and newer TH350 units, it ensures smooth performance and durability. |
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Compatible With: Chevy GM TH350 Turbo 350 Transmission Performance Stage 1 Master Rebuild Kit |
This product is perfect for car enthusiasts and DIY mechanics upgrading Chevy GM TH350 transmissions. It’s ideal for performance builds, heavy-duty towing, or daily drivers needing stronger clutches and long-lasting seals. |
Detailed Reviews
Looking for the best Chevy TH-350 rebuild kits? Our expert-vetted list highlights top picks for durability, performance, and value. Each kit is handpicked to tackle tough rebuilds with confidence and ease.
1. Master Engine Rebuild Kit FITS: 1967-1985 Chevrolet SBC GM 350 5.7L OHV V8 (Truck & Car)

This Master Engine Rebuild Kit fits 1967–1985 Chevrolet SBC GM 350 5.7L V8 engines in trucks and cars. It includes high-quality components for rebuilding your engine, ensuring reliability and performance.
The kit uses durable materials to restore engine power and efficiency. Designed for easy installation, it suits both DIYers and pros. Fits all SBC 350 engines from the listed years without extra parts.
| Pros | Cons |
|---|---|
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Perfect For:
This Master Engine Rebuild Kit is perfect for car and truck owners with a 1967-1985 Chevrolet SBC GM 350 5.7L OHV V8 engine. It’s ideal for those looking to restore or rebuild their engine.
Ready to Purchase?
2. Compatible With: Chevy GM TH350 Alto Transmission Less Steel Rebuild Kit Level 2

This transmission rebuild kit offers highest quality parts for Chevy GM TH350. It includes ALTO high energy green frictions for strong performance. The kit has everything you need to rebuild your transmission.
Durable sealing rings, gaskets, and o-rings stop leaks. You get metal clad seals, a front band, and a filter. It fits all 1969-on TH354 models perfectly.
Easy to install with clear parts list and full support. A trusted choice for reliable, long-term results.
| Pros | Cons |
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Perfect For:
This product is perfect for DIY mechanics and professional technicians seeking a high-quality, reliable rebuild kit for Chevy GM TH350 transmissions. It includes ALTO high energy green frictions, durable sealing rings, metal seals, gaskets, and all critical parts for a full rebuild, ensuring long-lasting performance and smooth installation.
Ready to Purchase?
3. TH350 TH350C Transmission Rebuild kit Heavy Duty Master Kit Stage 4

This is a Stage 4 Heavy Duty Master Rebuild Kit for TH350/TH350C transmissions. It includes Alto HEG Graphite frictions, steels, gaskets, and seals. Built for high-stress use like towing or heavy trucks.
Designed for durability, it resists heat and pressure. The kit ensures smooth shifts and long-term performance.
Fully compatible with 1969–86 TH350/TH350C units in GM cars and trucks. Works for lockup and non-lockup models.
Hand-picked by experts with 35+ years of experience. Made to outperform stock parts for reliable results.
| Pros | Cons |
|---|---|
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Perfect For:
Heavy-duty truck owners and towing vehicle enthusiasts need this kit for tough builds. It includes Alto HEG graphite frictions, premium seals, and full-ring front bands to handle heat and stress. Perfect for GM cars and light trucks (1969–86), it ensures a leak-free, long-lasting rebuild with expert-backed quality.
Ready to Purchase?
4. Compatible With: Chevy GM TH350 Alto Transmission Master Rebuild Kit Level 2

This kit is high quality and meets professional standards. It uses ALTO high energy green friction for better performance. The kit fits Chevy GM TH350 transmissions perfectly.
It includes friction plates, steels, seals, gaskets, and more. Every part is built to last and handle tough conditions.
The kit works for all 1969-on TH350 models. It’s a complete solution for rebuilds, trusted by experts.
| Pros | Cons |
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Perfect For:
This kit is perfect for DIY mechanics and auto repair pros rebuilding Chevy GM TH350 transmissions. It includes high energy plates, steels, and all seals for 1969 and newer TH350 models.
Ready to Purchase?
5. Turbo TH350/C Automatic Rebuild Kit for GM 1969-1986

This Turbo TH350/C Automatic Rebuild Kit fits GM 1969-1986 models. It has all the high-wear parts for a full, pro-level transmission repair.
The Precision International gasket set and metal clad seals stop leaks. The Adjustable Red Stripe vacuum modulator ensures smooth shifts. The flex intermediate brake band and washer kit boost clutch grip.
A Dacron/Felt filter and bronze bushings keep fluid clean. These parts cut down on wear and help the transmission run longer.
| Pros | Cons |
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Perfect For:
This rebuild kit is perfect for DIY mechanics and auto repair pros working on older GM vehicles with TH350/C transmissions from 1969-1986. It includes all key parts for a full overhaul, like gaskets, seals, filters, and bushings, to ensure smooth shifts, leak-free performance, and long-term durability.
Ready to Purchase?
6. BIGLKNM TH350 Transmission Seal Filter Kit; Automatic Transmission External Gasket Seal Reseal Kit for Turbo 350 TH350 TH350C Rebuild Kit

This TH350 transmission seal kit fits Turbo 350, TH350, and related models. It seals leaks and works for all years and brands. The OEM-fit gaskets match original parts perfectly.
The kit uses heat-resistant fluoro rubber O-rings to prevent leaks. It includes a pan gasket, pump seal, and O-rings for full repair.
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Perfect For:
This transmission seal kit is perfect for DIY car repairers or mechanics fixing Turbo 350/TH350 transmissions. It includes durable seals, gaskets, and O-rings to stop leaks and ensure a tight, long-lasting fit.
Ready to Purchase?
7. 345215 Speedometer Housing Gear Seal Kit Compatible with Chevy GM TH350 TH350C Turbo 350 with O-Ring & Metal Seal & Bolts Washers 25513247-7pcs

345215 Speedometer Housing Gear Seal Kit works with Chevy GM TH350 and TH350C Turbo 350 transmissions. It includes seals, O-rings, bolts, washers, and a metal seal for easy repair.
Made from sturdy, high-quality materials, this kit resists high heat and lasts long. It stops oil leaks at the speedometer gear, cutting wear. The precise fit ensures safe, smooth driving with no slippage.
Replaces part numbers 25513247, A44774, and more with a full 7-piece set. No extra parts needed—just install and go. Fixes leaks fast, saving time and effort.
| Pros | Cons |
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Perfect For:
This product is perfect for DIY car repair enthusiasts and professional mechanics working on Chevy GM TH350 or Turbo 350 transmissions. It’s ideal for anyone needing to stop oil leaks, replace worn seals, or upgrade their speedometer gear housing with a durable, precise-fit kit that includes all necessary parts.
Ready to Purchase?
8. TH350 Turbo 350 Transmission Raybestos Stage 1 Red Less Steel Rebuild Kit

The Raybestos Stage 1 Rebuild Kit is built for TH350 Turbo 350 transmissions. It includes premium frictions, gaskets, seals, and parts made in the USA for durability.
This kit has Raybestos Stage 1 Friction Plates, a Transtec Gasket Kit, and parts to handle heat and stress. It’s ideal for towing, street rods, or mild performance use. Stage-1 frictions boost grip without needing heavy-duty Gen2 parts.
High-quality materials ensure smooth shifts and longer life. Perfect for drivers who want reliable upgrades for daily driving or light performance needs.
| Pros | Cons |
|---|---|
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Perfect For:
This rebuild kit is perfect for DIY mechanics and auto shops upgrading TH350 transmissions for performance builds or heavy-duty towing. It includes Raybestos Stage 1 Frictions and a Transtec Gasket Kit to handle higher temperatures and boost durability in street rods, tuner cars, or trucks hauling tough loads.
Ready to Purchase?
9. Compatible With: Chevy GM TH350 Alto Red Eagle Less Steel Transmission Rebuild Kit Level 2

This transmission rebuild kit fits all 1969+ Chevy GM TH350 models. It includes ALTO Red Eagle friction plates and Kolene steels for strong performance. The Level 2 kit has seals, gaskets, bands, and filters for full repairs.
Built with professional-grade materials, it ensures smooth shifts and long-term use. Easy to install with all parts needed for a reliable rebuild.
| Pros | Cons |
|---|---|
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Perfect For:
This transmission rebuild kit is perfect for mechanics and DIY car lovers fixing Chevy GM TH350 models. It includes Red Eagle frictions, Kolene steels, and all seals, gaskets, and bushings needed for reliable, long-lasting repairs. Designed for 1969 and newer TH350 units, it ensures smooth performance and durability.
Ready to Purchase?
10. Compatible With: Chevy GM TH350 Turbo 350 Transmission Performance Stage 1 Master Rebuild Kit

This kit is made for Chevy GM TH350 Turbo 350 transmissions. It includes top-quality Raybestos clutches and Precision Gasket Kit parts. All pieces are built to meet professional installer standards.
The kit has Stage 1 Red Friction Plates for better grip and heat resistance. It also has Kolene Steel Plates, seals, gaskets, and rings for a full rebuild. These parts handle performance and heavy-duty needs like towing or street racing.
Stage 1 frictions are perfect for daily drivers or mild performance builds. They offer more strength than stock parts without needing advanced upgrades.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for car enthusiasts and DIY mechanics upgrading Chevy GM TH350 transmissions. It’s ideal for performance builds, heavy-duty towing, or daily drivers needing stronger clutches and long-lasting seals.
Ready to Purchase?
Buying Guide
Rebuilding a Chevy TH-350 transmission? Choosing the right kit is key. Our guide makes it simple.
Factors to Consider When Buying a Chevy TH-350 Rebuild Kit:
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Compatibility: Ensure the kit fits your specific TH-350 model and year. Check for engine type and transmission version compatibility.
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Quality of Materials: Look for durable materials like high-energy frictions, metal-clad seals, and heat-resistant O-rings. These ensure longevity and performance.
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Kit Contents: Verify the kit includes all essential parts such as gaskets, seals, bands, and filters. A complete kit saves time and effort.
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Performance Level: Choose a kit based on your needs—daily driving, towing, or performance upgrades. Stage 1 kits are great for mild use, while Stage 4 handles heavy-duty tasks.
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Ease of Installation: Opt for kits with clear instructions and easy-to-follow designs. This makes the rebuild process smoother, especially for DIYers.
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Brand Reputation: Trust well-known brands like Alto, Raybestos, and Precision International. They offer reliable, high-quality parts.
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Leak Prevention: Prioritize kits with leak-proof seals and gaskets. This ensures your transmission stays fluid-tight and efficient.
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Price vs. Value: Compare prices but focus on value. A slightly higher cost for premium parts can save money in the long run.
With these factors in mind, you’ll find the perfect Chevy TH-350 rebuild kit for your needs. Happy rebuilding!