231481 – cylinder,rear compartment lid (coded)
Did You find This Page Helpful? This was usefull 0 Not enough information 0
January 22, 2022
OEM Part
lock washer(7/16 x 25/32)(transmission mount to transmission)(with 250 & v8)
#120383
DATA STATUS
Phase One Data Check
Part data has passed our initial book data check.
Part is awaiting a second data review.
- OEM GM Part
- Parts For 1977 - 1985 Chevy Impala and Caprice Vehicles
- Washer
Become a member to save parts
Main Part Image
Spot A Part Error? | Report it
Did you spot a part error in the information for this part? Report it and we will add this part to our review this part list. We will manually check this part for accurately.
Part Info
- Part Number: 120383
- Part Name: lock washer(7/16 x 25/32)(transmission mount to transmission)(with 250 & v8)
- Part Type: Washer
- Door Model: 2 door = B47, 4 door = B69
- Car Model: Possibly Both Models
Model Years Used In
N/A
This section may appear blank as we are adding this info in or phase 2 info check to help speed up the process of add all part numbers to the database faster.
Quanity Needed
Some specifications may vary by vehicle application. Verify fitment before installation.
- 2 Per vehicle
- As needed
Part Description
Chevy Part #120383 – Lock Washer (7/16 x 25/32) for Transmission Mount to Transmission
The GM 120383 lock washer is a critical fastening component designed to secure the transmission mount to the transmission on Chevrolet vehicles equipped with 250 Inline-6 and V8 engines. Featuring a 7/16-inch inner diameter (ID) and 25/32-inch outer diameter (OD), this washer provides locking security to prevent bolt loosening due to engine vibrations and drivetrain movement. Constructed from hardened steel with a corrosion-resistant finish, it ensures long-lasting durability and proper tension retention. This washer meets OEM specifications, making it ideal for factory-correct restorations and maintenance.
Advanced Part Information
– GM Part Number: 120383
– Inner Diameter (ID): 7/16 inch
– Outer Diameter (OD): 25/32 inch
– Fastener Type: Lock washer
– Application: Transmission mount to transmission
– Material: Hardened steel with corrosion-resistant coating
– Compatible Engines: 250 Inline-6, V8
– Compatibility: Chevrolet Impala, Caprice (various years)
– OEM Equivalent: Direct factory replacement
– Function: Prevents bolt loosening by maintaining tension and resisting vibration
– Installation: Pair with correct factory bolt; ensure proper torque for optimal performance
The GM 120383 lock washer is a critical fastening component designed to secure the transmission mount to the transmission on Chevrolet vehicles equipped with 250 Inline-6 and V8 engines. Featuring a 7/16-inch inner diameter (ID) and 25/32-inch outer diameter (OD), this washer provides locking security to prevent bolt loosening due to engine vibrations and drivetrain movement. Constructed from hardened steel with a corrosion-resistant finish, it ensures long-lasting durability and proper tension retention. This washer meets OEM specifications, making it ideal for factory-correct restorations and maintenance.
Advanced Part Information
– GM Part Number: 120383
– Inner Diameter (ID): 7/16 inch
– Outer Diameter (OD): 25/32 inch
– Fastener Type: Lock washer
– Application: Transmission mount to transmission
– Material: Hardened steel with corrosion-resistant coating
– Compatible Engines: 250 Inline-6, V8
– Compatibility: Chevrolet Impala, Caprice (various years)
– OEM Equivalent: Direct factory replacement
– Function: Prevents bolt loosening by maintaining tension and resisting vibration
– Installation: Pair with correct factory bolt; ensure proper torque for optimal performance
Click image or click here to become a free member
See Other Parts
343752 – gasket,E.G.R valve (with V8)(except NB2)
Did You find This Page Helpful? This was usefull 0 Not enough information 0
January 29, 2022
334972-bolt,(7/16-14 x 5 1/8) (w/250 & w/v8)(engine bracket to motor mount)
Did You find This Page Helpful? This was usefull 0 Not enough information 0
September 9, 2021
342494 – piston, & seal kit, intermediate servo (m33 & m38)
Did You find This Page Helpful? This was usefull 0 Not enough information 0
January 29, 2022
Click here to see all parts
