UNITED DELCO 3925690 Nos Muncie Shaft AWT297-16 67 68 M-21

( Brand: United Delco ), ( Manufacturer Part Number: 3925690 ), ( Part Type: Shaft ), ( Ipn: Awt297-16 ), ( Transmission Type: Manual ), ( Country Of Origin: United States )

Review UNITED DELCO Nos 67 68 69 Muncie M21 Input Shaft M-21 Speed Chevy fits CAMARO CHEVELLE 1970

The United Delco 3925690 is a set of four new M-21 Shafts, specifically designed for Muncie M21 transmissions used in various applications, including the iconic Chevrolet Camaro and Chevelle models from the late 1960s.

Each shaft in this set is meticulously manufactured to meet original equipment specifications, ensuring a perfect fit and reliable performance. These shafts are engineered with precision-machined splines that smoothly engage with the transmission gears, reducing wear and tear and minimizing the risk of transmission damage.

The United Delco 3925690 set includes shafts for the first, second, third, and reverse gears. The first gear shaft (no. 67) features a heavy-duty design to handle the torque demands of low-end power delivery. The second gear shaft (no. 68) is engineered for smooth and efficient power transfer between gears. The third gear shaft (no. 69) is designed for durability and reliability under heavy load conditions. Lastly, the reverse gear shaft (no. 70) enables the vehicle to move in reverse.

Each shaft in this set is made of high-strength materials, such as chrome molybdenum steel, that provide superior strength and durability. The shafts are then heat-treated to ensure optimal hardness and flexibility, ensuring they can withstand the rigors of high-performance driving.

Installing the United Delco 3925690 shafts is a straightforward process. Each shaft comes complete with a new synchronizer ring and seal, making this a comprehensive rebuild solution for your Muncie M21 transmission. By upgrading to new shafts, you can improve your transmission's overall performance and extend its lifespan.

In summary, the United Delco 3925690 set of four new M-21 Shafts is an essential upgrade for Muncie M21 transmissions used in late 1960s Camaro and Chevelle models. These high-quality shafts are meticulously manufactured to meet original equipment specifications, ensuring a perfect fit and reliable performance. By upgrading to these new shafts, you can improve your transmission's overall performance and extend its lifespan.

1. OEM Part: This part is an original equipment manufacturer (OEM) replacement, ensuring that it fits and functions perfectly, just like the original part.

2. High-Quality Material: The United Delco M21 shaft is made with high-quality materials, ensuring durability and long-lasting performance.

3. Improved Performance: Replacing a worn-out or damaged shaft can improve the overall performance of the transmission.

4. Reliable: As a well-known brand, United Delco has built a reputation for producing reliable and effective automotive parts.

1. Cost: The United Delco M21 shaft can be quite expensive compared to aftermarket alternatives.

2. Availability: Due to its OEM status, this part may not be readily available at all auto parts stores, requiring a search at specialized dealerships or online retailers.

3. Installation Complexity: Installing the M21 shaft can be a complex process, requiring specialized tools and expertise, potentially leading to additional labor costs.

The United Delco 3925690 muncie M21 shaft is a high-quality OEM replacement that offers improved performance and durability. However, its cost and availability can be limiting factors for some buyers. Ultimately, the decision to purchase this part depends on the individual's priorities, budget, and availability of alternative options.

If you prioritize performance, reliability, and the peace of mind that comes with using OEM parts, the United Delco M21 shaft is an excellent choice. However, if cost is a concern, you may want to consider aftermarket alternatives or used OEM parts. Additionally, ensure you have access to the necessary tools and expertise for installation to minimize additional costs.

Details:

A must for anyone wanting real GM parts. This is United Delco / GM part# 3925690 and found in group# 4.351. Up for sale is a NOS United Delco/GM Muncie M-21 4 speed input shaft. This has 26 teeth with 10 splines.

part #: 3925690 prices

• $68.00-$274.95

specifications othellodrivetrain:

• for models: Camaro, Chevelle
• for makes: Chevy
• for years: 1970
• brand: United Delco
• mpn: 3925690
• part type: Shaft
• ipn: Awt297-16
• transmission type: Manual
• country of origin: United States

payments othellodrivetrain:

• other
• credit card: Discover
• wallet: Apple-pay

returns othellodrivetrain:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

offer othellodrivetrain:

• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: May 11, 2026

shipping othellodrivetrain:

• type: Fixed
• cost: $15.00
• service: Standard
• class: Standard
• transit: 2-4 Days

general othellodrivetrain:

• Car Truck Parts Accessories > Transmission Drivetrain > Other Transmission Drivetrain
• condition: New other see details

seller othellodrivetrain:

• # reviews: 4693
• city: Leo, Indiana
• rating: 99.7%

United Delco 3925690 Is Similar To:

• United Delco 3812741 1960 1969 Corvair 1962 1963 Corvettte Trans Vacuum Modulator Nos (22.8% similar) With power glide 1962 -63 chevy 1ST design 1962 Chevrolet passenger, corvette 327 1963 truck make sure this part fits your application. Transmission vacuum modulator nos, gm part #3812741 group #4.205, fits: 1960 -69 corsair,.c. 1B07-2 3 gm part #3812741 group #4.205...(June 10th, 2025)
• United Delco 3783288 18 Gm High Clutch Springs Nos (25.5% similar) The product is a set of United Delco high clutch springs specifically designed for gm vehicles, with the manufacturer part number 3783288. These springs are considered a vintage part, making them rare and sought-after item for car enthusiasts collectors...(July 30th, 2025)
• United Delco 8622339 Governor Transmission Pontiac 1961 With 4bbl Carburetor 1963 1964 Nos Gm (23.2% similar) Governor transmission Pontiac 1961 with 4BBL carburetor 1963 1964 nos gm 8622339 see pictures as they provide the most accurate...(October 25th, 2025)
• United Delco 861737 Gear Transmission Reverse Internal Gm 68 Tooth 1959-64 8618737 A4 (28.6% similar) The gear transmission reverse internal gm United Delco 68 tooth 1959 -64 8618737 a4 is a vintage part manufactured in the states by. This gear transmission is specifically designed for gm vehicles from 1959 to 1964 , offering reliable performance your vehicles and drive train system...(November 21st, 2025)
• Gm united Delco 3779904 1961-67 Corvette And Other Gms With Pg Trans-gm Trans Clutch Plate (27.4% similar) Part #: gm/united Delco 3779904 for sale...(November 27th, 2025)
• United delco 3789877 Nos Chevrolet 1962-73 Trans Rear Pump Body Bushing W p.g 3789877 (27% similar) Nos transmission rear pump body bushing for: Chevrolet 1962 -73 pass...(December 4th, 2025)
• United Delco Gm General Motors 3901146 New Nos 1968-77 Gmc Chevy Truck 4 Speed Cluster Counter Gear (40.8% similar) We buy collections and portions of. Are you in charge of an estate that want to sell. This means there could be some discoloration, markings, scratches, or other defects. 1968 1977 Chevrolet trucks c/k series, including K10, K20, K30. What you see is what get. Buyer pays return shipping...(December 8th, 2025)
• Chevrolet 6261014 Nos United Delco 1969-76 Chevy With Th350 Trans Direct Drum Trust Washer (27.8% similar) What you see is what get. Fits the following with TH350, TH375B, or M38 transmissions: 1969 1976 Chevrolet camaro TH350. Buyer pays return shipping unless we sent a defective item or it was damaged during. Formerly vintage street antiques and collectibles. Are you in charge of an estate...(December 27th, 2025)
• Chevrolet 6261015 Nos United Delco 1969-86 Chevy With Th350 Trans Direct Drum Trust Washer (27.8% similar) What you see is what get. Formerly vintage street antiques and collectibles. This means there could be some discoloration, markings, scratches, or other defects. Are you in charge of an estate that want to sell. Please look closely at the pictures for condition before buying...(December 27th, 2025)
• Gm united Delco 6634858 2 Nos 71-72 Vega 3 Speed Standard Trans Lock Rings (40.9% similar) It fits 1971 -72 chevy Vegas which used Opel transmissions. It is a trans clutch gear bearing retainer...(March 16th, 2026)
• United Delco 11054211 Lot Of 12 New Old Stock Nos Gm Pin 54211 Interchanges With Vintage (37.8% similar) Formerly vintage street antiques and collectibles. Like what you see. Are you in charge of an estate that want to sell. This means there could be some discoloration, markings, scratches, or other defects. Unknown fitment. What you see is what get. Any questions. Buyer pays return...(March 22nd, 2026)