MSD 81951 Heat Shrink Terminal Kit 165-Piece Waterproof Connector Assortment

The MSD 81951 Heat Shrink Terminal Kit is a comprehensive 165-piece assortment of waterproof heat shrink terminals and closed-end connectors designed for professional-grade automotive, marine, and powersports wiring applications. The kit includes spade, butt, and ring terminal types, giving you everything needed to make clean, reliable, and moisture-resistant electrical connections in a single package.

Each terminal features a polyethylene (PE) insulation sleeve with a copper terminal body and an impressive 3:1 heat shrink ratio, ensuring a tight, secure seal over a wide range of wire sizes from 10 to 22 AWG. Once activated with heat, the adhesive-lined wall forms a waterproof barrier that protects against corrosion, vibration, and moisture intrusion — ideal for underhood, chassis, and exterior wiring.

Key Features:

• 165-piece kit with spade, butt connector, ring terminal, and closed-end connector types
• Waterproof adhesive-lined heat shrink construction
• 3:1 shrink ratio for maximum coverage and seal
• Compatible with wire gauges 10–22 AWG
• Shrink activation temperature: 150°C (302°F)
• Operating temperature range: -10°C to 105°C (-14°F to 221°F)
• Copper terminal material with polyethylene (PE) insulation
• Legal for use on emissions-controlled and racing vehicles

Whether you're building a high-performance ignition system or making clean repairs to existing wiring, the MSD 81951 delivers professional results. Pair it with an MSD specialty crimping tool for best results.