1966 GMC I2500 Transmission Parts

Essential 1966 GMC I2500 Transmission Parts

B & M – Holeshot 2400 (Part No.70411)

Holeshot 2400

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$598.99
A higher than stock stall speed as delivered by the Holeshot converter will provide several advantages and benefits in vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low end power and torque. The high stall converter allows the engine to launch the car at higher rpm where more torque is available. The Holeshot is generally a very good choice for the typical street machine that is looking for better launch capability and more strength. Street rods with modified engines will also benefit from a Holeshot converter. If your vehicle is equipped with a plate type nitrous system, you will need a Nitrous Holeshot!! Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Furnace brazed impeller. New precision steel alloy pump drive tube. New heavy duty needle bearing between stator and impeller (not a thrust washer). Needle bearing between stator and turbine. Furnace brazed turbine. Dual pattern drive lugs on some GM Holeshots. New turbine hub. New springs and rollers in stator.

Product Features:
  • Furnace Brazed Impeller
  • Steel Alloy Pump Drive Tube
  • Heavy Duty Needle Bearing
  • Between Stator and Turbine
  • Furnace Brazed Turbine
  • New Turbine Hub
  • New Springs/Rollers In Stator
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Felpro – Transmission Oil Pan Gasket (Part No.TOS 18608)

Transmission Oil Pan Gasket

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$8.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Felpro – Manual Transmission Gasket Set (Part No.TS 5190)

Manual Transmission Gasket Set

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$11.29
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Includes all parts needed to complete the repair
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ACDelco – Neutral Safety Switch (Part No.D2217C)

Neutral Safety Switch

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$39.99
ACDelco Professional Neutral Safety Switch is a high quality aftermarket replacement component for one or more of the following vehicle systems: automatic transmission/transaxle, and/or manual drivetrain and axles. This premium aftermarket switch is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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B & M – Master Overhaul Kit For Powerglide Transmission (Part No.21040)

Master Overhaul Kit For Powerglide Transmission

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$399.99
The B&M Master Racing Overhaul Kit includes all gaskets, seals, bushings and high performance friction materials. No transbrake body gaskets or instructions included.

Product Features:
  • Complete High Perf. Or Racing Trans. Overhaul
  • Includes Only OEM Valvebody Gaskets
  • Instructions Not Included
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B & M – Cable Bracket (Part No.70460)

Cable Bracket

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$26.59
B&M cable bracket fits GM Powerglide transmissions.

Product Features:
  • Shifter Service Parts
  • Steel
  • Natural Finish
  • Sold individually
  • B&M quality
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National – Multi Purpose Seal (Part No.5092)

Multi Purpose Seal

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$44.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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National – Multi Purpose Seal (Part No.411330N)

Multi Purpose Seal

from

$17.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
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B & M – Pro Lever (Part No.70465)

Pro Lever

from

$71.29
Powerglide Pro Lever APPLICATION: For all B&M 2 speed shifters.

Product Features:
  • Contains 4 Holes
  • Allows Lever Position Up
  • For Non Standard Applications
  • Does Not Have TV Hole
  • Steel
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B & M – Shifter Accessory, Pro Stick Aluminum Cover (Part No.80717)

Shifter Accessory, Pro Stick Aluminum Cover

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$121.99
Replacement aluminum cover for your B&M Pro Stick.

Product Features:
  • Pro Stick; Brushed Aluminum Cover
  • Aluminum Cover
  • Replacement Part
  • Sold individually
  • B&M quality
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Driveworks – Tapered Roller Bearing (Part No.S-2720)

Tapered Roller Bearing

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$7.49
Product Features:
  • Brand may vary by location
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Driveworks – Oil Seal Kit (Part No.S-5200)

Oil Seal Kit

from

$6.79
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Driveworks – Oil Seal (Part No.S-6712NA)

Oil Seal

from

$6.29
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1033)

Automatic Transmission Modulator Valve

from

$39.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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National – Bearings (Part No.FA-35688)

Bearings

from

$11.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Available in both caged design and full complement
  • Industry leading coverage
  • Professional technicians know they can depend on National
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National – Bearings (Part No.307-L)

Bearings

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$39.49
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Controlled heat treating process for lasting performance and extended bearing life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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National – Bearings (Part No.A-3)

Bearings

from

$14.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Imperial – Maxi-Kool® XL Transmission Oil Cooler (Part No.243012)

Maxi-Kool® XL Transmission Oil Cooler

from

$81.99
Product Features:
  • Class “A” motor homes, large travel trailers, 5th-wheel trailers
  • GVWR up to 30,000 lbs.; towing up to 10,000 lbs.
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Imperial – Plate and Fin Style Trans Cooler 3/4" x 5-7/8" x 11" Light Duty (Part No.243006)

Plate and Fin Style Trans Cooler 3/4" x 5-7/8" x 11" Light Duty

from

$59.99
Product Features:
  • Imperial Rapid-Cool« plate and fin transmission cooler
  • Size: 3/4″ x 11″ x 6″
  • Sub-compact to compact cars
  • GVWR up to 18,000 lbs.
  • Compatible with OEM cooler systems
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Felpro – Manual Transmission Gasket Set (Part No.TS 30118)

Manual Transmission Gasket Set

from

$24.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Includes all parts needed to complete the repair
See More

National – Multi Purpose Seal (Part No.6712NA)

Multi Purpose Seal

from

$10.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

National – Multi Purpose Seal (Part No.240735)

Multi Purpose Seal

from

$5.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Low swell in hydrocarbon fluids
  • Design type: spring loaded; multi-lip
  • Provides good low temperature capability
  • Temperature range: -40°F to 225°F; -40°C to 107°C
  • Delivers quality and reliable performance for every type of repair
See More

Driveworks – Oil Seal (Part No.S-9613S)

Oil Seal

from

$4.79
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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1966 GMC I2500 Transmission Parts

You count on your 1966 GMC I2500 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Transmission Parts. With 43 Transmission Parts ranging in price from $4.79 to $1,150.00, you’re sure to find everything you need for your 1966 GMC I2500.

Brands matter. If you want to shop a specific Transmission Parts brand, we stock 9 different brands like Imperial, National, and Driveworks. 1966 GMC I2500 Transmission Parts start as low as $4.79!

One of the best ways to find top quality OEM or aftermarket Transmission Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 199 extensive product reviews on 1966 GMC I2500 Transmission Parts. Some of the top-rated Transmission Parts products we carry are Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty with 4.5 stars and Maxi-Kool® XL Transmission Oil Cooler with 5.0 stars.

Did we mention you can order your Transmission Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Transmission Parts inventory for your 1966 GMC I2500 below to get started!

Top-Rated Transmission Parts Brands For Your 1966 GMC I2500

Trusted Transmission Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 1966 GMC I2500 running right for years to come. In our inventory you’ll find brands like Imperial, National, Driveworks, and even more.

Popular National Transmission Parts

You’ll find popular National brand products across Transmission Seals. All are waiting to get your 1966 GMC I2500 back on the road. Some of the top-rated National products in these categories are:
Multi Purpose Seal
from $10.49
(4)
Multi Purpose Seal
Transmission Seals and O-rings
Multi Purpose Seal
from $6.99
(20)
Multi Purpose Seal
Miscellaneous Automatic Transmission Seals
Bearings
from $14.99
(21)
Bearings
Miscellaneous Transmission Bearings

FAQs for 1966 GMC I2500 Transmission Parts

What are the most purchased Transmission Parts for the 1966 GMC I2500?

Out of 43 Transmission Parts for the 1966 GMC I2500, the most popular in our inventory are:
Econo-Kool® Transmission Oil Cooler
from $39.99
(10)
Econo-Kool® Transmission Oil Cooler
OE Transmission Coolers
Multi Purpose Seal
from $7.99
(8)
Multi Purpose Seal
Manual Transmission Output Shaft Seals
High Performance Transmission Oil Cooler
from $85.99
(4)
High Performance Transmission Oil Cooler
OE Transmission Coolers

What are the top-rated 1966 GMC I2500 Transmission Parts?

Top-rated Transmission Parts for your 1966 GMC I2500 based on customer reviews/ratings are:
Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty
from $80.99
(8)
Plate and Fin Style Trans Cooler 3/4" x 9-1/2" x 11" Heavy Duty
“Used this cooler to replace the missing factory one on my Polaris 330 ATV. Made an adapter plate to fit to the fan housing. Works great, beats the $30”
Maxi-Kool® XL Transmission Oil Cooler
from $73.99
(7)
Maxi-Kool® XL Transmission Oil Cooler
“this transmission oil cooler is replacing my one on my 2000 dodge dakota its priced right mid size and easy to put in the ome one is 250 this is 60 an”
Econo-Kool® Transmission Oil Cooler
from $52.99
(4)
Econo-Kool® Transmission Oil Cooler
“I just like the additional cooling on all my vehicles for transmission to last longer. They aren’t getting any cheaper to overhaul!”