GM TH425 Transaxle Stock Capacity Transmission Pan – Durable Aluminum Replacement

Maintain factory performance and reliability with this GM TH425 Transaxle Stock Capacity Transmission Pan, designed as a direct replacement for original equipment pans. This pan retains the factory fluid capacity, ensuring proper operation and performance without altering OEM specifications.

Constructed from high-quality aluminum, this transmission pan offers improved durability and enhanced heat dissipation compared to factory stamped steel pans. It’s an excellent choice for restoration projects, routine maintenance, or replacing worn or damaged components.

Perfect for classic GM front-wheel-drive applications equipped with the TH425 transaxle, this pan delivers dependable fitment, strength, and long-lasting performance.

✅ Key Features:

• Maintains stock fluid capacity for proper transmission operation
• Designed for GM TH425 transaxle applications
• Durable aluminum construction for strength and improved cooling
• Direct replacement for factory transmission pans
• Ideal for restoration, maintenance, or repair
• Ensures proper fit and leak-free sealing

Keep your transmission running smoothly with a high-quality replacement built for durability and reliability.

Pan includes magnetic drain plug and mounting hardware.
Price varies with finish.

Volume: stock to a little over stock capacity

Dimensions: Click here for dimensions. 

Number of Bolts: 13

Benefits:

• Drain hole and magnetic drain plug for easier fluid changes
• Raised fins to help with cooling
• Heavy duty construction for strength
• Thick flange for an excellent seal to the transmission housing

This pan is stock capacity but it is still larger than stock due to the thick wall construction and fins. Always check your vehicle for clearance before ordering.

Applications:

This PML pan fits many front wheel drive GM cars and chassis with the TH425 transaxle transmission. This includes:

• 1966-78 Oldsmobile Toronado
• 1967-78 Cadillac Eldorado
• GMC Motorhomes

Always check your vehicle for clearance and fitment. Configurations vary.

Drain, Bolts and Optional Temperature Sensor Machining

     
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The drain hole is located on the front of the pan.

This PML pan includes a magnetic drain plug, copper sealing washer and new mounting hardware.

The pan has a half circle boss (thick area) on the front of the pan near the drain plug that optionally can be drilled and tapped for a temperature sending unit for an aftermarket temperature gage. There is a custom machining charge if PML drills and taps the hole. Select the option before clicking ADD TO CART button. The standard size is 1/8 NPT. Call or email if a different size is needed.

Inside of Pan

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PML Transmission Pan Compared to Stock

   
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