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OEM Part
3990160 - flat washer, (15/32 x 7/8 x 3/32)(transmission crossmember to frame)
#3990160
DATA STATUS
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Part is awaiting a second data review.
- OEM GM Part
- Parts For 1977 - 1985 Chevy Impala and Caprice Vehicles
- Washer
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Part Info
- Part Number: 3990160
- Part Name: 3990160 - flat washer, (15/32 x 7/8 x 3/32)(transmission crossmember to frame)
- Part Type: Washer
- Door Model: 2 door = B47, 4 door = B69
- Car Model: Possibly Both Models
Model Years Used In
N/A
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Quanity Needed
Some specifications may vary by vehicle application. Verify fitment before installation.
- 4 Per vehicle
- As needed
Part Description
Chevy Part #3990160 – Flat Washer (15/32″ ID x 7/8″ OD x 3/32″ Thick) for Transmission Crossmember to Frame
The GM 3990160 flat washer is a precision-engineered component designed for securing the transmission crossmember to the frame on Chevrolet vehicles. With a 15/32-inch inner diameter (ID), 7/8-inch outer diameter (OD), and 3/32-inch thickness, this washer helps evenly distribute clamping force, preventing damage to mounting surfaces and ensuring a secure and stable connection. Constructed from hardened steel with a corrosion-resistant coating, it withstands vibration, torque stress, and environmental exposure. This washer meets OEM specifications, making it an ideal choice for restorations, maintenance, and performance applications.
Advanced Part Information
– GM Part Number: 3990160
– Inner Diameter (ID): 15/32 inch
– Outer Diameter (OD): 7/8 inch
– Thickness: 3/32 inch
– Fastener Type: Flat washer
– Application: Transmission crossmember to frame
– Material: Hardened steel with corrosion-resistant coating
– Compatibility: Chevrolet Impala, Caprice (various years)
– OEM Equivalent: Direct factory replacement
– Function: Distributes load evenly to prevent surface damage and ensures secure fastening
– Installation: Works with factory bolts and nuts; ensure proper torque for optimal performance
The GM 3990160 flat washer is a precision-engineered component designed for securing the transmission crossmember to the frame on Chevrolet vehicles. With a 15/32-inch inner diameter (ID), 7/8-inch outer diameter (OD), and 3/32-inch thickness, this washer helps evenly distribute clamping force, preventing damage to mounting surfaces and ensuring a secure and stable connection. Constructed from hardened steel with a corrosion-resistant coating, it withstands vibration, torque stress, and environmental exposure. This washer meets OEM specifications, making it an ideal choice for restorations, maintenance, and performance applications.
Advanced Part Information
– GM Part Number: 3990160
– Inner Diameter (ID): 15/32 inch
– Outer Diameter (OD): 7/8 inch
– Thickness: 3/32 inch
– Fastener Type: Flat washer
– Application: Transmission crossmember to frame
– Material: Hardened steel with corrosion-resistant coating
– Compatibility: Chevrolet Impala, Caprice (various years)
– OEM Equivalent: Direct factory replacement
– Function: Distributes load evenly to prevent surface damage and ensures secure fastening
– Installation: Works with factory bolts and nuts; ensure proper torque for optimal performance
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