551915 Dipstick Tube Plug Seal For GM TH350 TH400 700R4 4L60E 4L80E0 0.6” 2PCS

Dipstick Tube Plug Seal for GM

This dipstick tube plug seal for GM replaces part number 551915 and provides a tight, leak-free barrier at the transmission dipstick entry point.

Overview

This dipstick tube plug seal prevents transmission fluid leaks from escaping around the fill tube. Specially sized at 0.6 inches, this plug seal is designed for GM automatic transmissions including TH350, TH400, and 700R4 models. Enthusiasts and technicians will benefit from this handy two-piece dipstick tube plug seal kit to ensure a clean transmission case during maintenance.

Built For Performance

• Constructed from premium elastomeric compound to resist swelling and hardening
• Provides a reliable 0.6-inch interference fit inside the transmission case hole
• Includes two seals to keep a spare on hand or service multiple vehicles
• Resists high operating temperatures and harsh transmission fluids

Fits These Machines

• for GM TH350 Transmissions
• for GM TH400 Transmissions
• for GM 700R4 Transmissions
• for GM 4L60E Transmissions
• for GM 4L80E Transmissions

On-The-Job Use

• Seals the base of the dipstick tube to prevent fluid weeping during operation
• Keeps external water and dirt from contaminating the transmission fluid
• Replaces worn or cracked factory grommets during transmission fluid changes

Specs At A Glance

Good To Know

Q: How do I install this seal? A: Push the seal directly into the transmission case first, then press the dipstick tube through the seal center.

Q: Does this fit aftermarket dipstick tubes? A: Yes, provided the aftermarket tube utilizes standard factory outside dimensions at the sealing point.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.