If you’ve ever wrestled with flimsy automotive connectors or struggled to make a secure electrical splice, you know the value of a quality terminal. Metri-Pack terminals are the industry standard for GM and many other vehicles, offering weatherproof seals and dependable conductivity in harsh under-hood environments.
This guide reviews ten of the best Metri-Pack terminals and tools currently available, covering everything from the compact GT 150 series to the heavy-duty 630 series. Whether you’re repairing a harness, building a custom loom, or just need the right crimping tool, you’ll find the specific product to match your needs.
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Metri-Pack 280 Series Female Terminal w/ 14 16 GA
Best forStandard 14-16 gauge repairs
- Wide temperature tolerance
- Correct gauge range
ConsiderNo seal included
Metri-Pack Kit
Best forMulti-series repair jobs
- Covers 150, 280, 480 series
- Includes seals
ConsiderNo crimping tool included
18-16 Ga. Female Metri-Pack Terminals, GT 150 Series, Sealed #12191819 –
Best forOEM-grade GT 150 connections
- Genuine Delphi part
- Sealed for weatherproofing
ConsiderOnly for 18-16 gauge
Metri-Pack 280 Series Female Terminal Gauge Size, 10-12 GA
Best forHigh-current 10-12 gauge circuits
- Stainless steel build
- Handles 10-12 AWG
ConsiderOnly 15 per pack
iCrimp Weather Pack Crimper Tools for Delphi APTIV Packard Weather Pack Ter…
Best forProfessional-grade crimping
- Two-step crimp process
- Works on 150 & 280 series
ConsiderRequires practice
18-16 Ga. Female Metri-Pack Terminals, GT 280 Series, Sealed #15304719 –
Best forPowertrain and chassis connections
- OEM Delphi quality
- Sealed for harsh environments
ConsiderLimited to 18-16 gauge
APTIV Metri-Pack Terminal Removal Tool Use with 150 & 280 &Gt150 & Gt280 Se…
Best forTerminal extraction without damage
- Compatible with multiple series
- Prevents connector damage
ConsiderOnly for removal
Gratux, Female Metri-Pack Terminals, GT 150 Series, 12191818
Best forSmall gauge sensor wires
- Fits 22-20 AWG
- Sealed for protection
ConsiderAftermarket brand
430Pcs 28types Automotive Car Electrical Terminal Pins auto Connectors Kit …
Best forVersatile terminal assortment
- 430 pieces, 28 types
- Tin-plated copper
ConsiderNot all Metri-Pack specific
20Pcs 12015870 Metri-Pack 630 Female Terminal 16-14 AWG 46A
Best forHigh-amp auxiliary circuits
- Rated for 46 amps
- Fits 16-14 AWG
ConsiderGeneric brand
ELITE.CITI Metri-Pack 280 Female Terminals – Reliable 14-16 Gauge
Brand: ELITE.CITI
A dependable, budget-friendly option for standard Metri-Pack 280 connections.
These ELITE.CITI female terminals are built for the Metri-Pack 280 series, a common connector type in modern vehicles. They accept 14-16 gauge wire, which covers most standard automotive circuits like lights, sensors, and small motors. The cable range is specified at 3.00 mm², ensuring a snug fit for the wire you’ll be crimping.
The temperature range from -40°F to 257°F means these terminals can handle both freezing winters and hot engine bays without losing integrity. With a pack of 20, you have enough to complete a small harness repair or several connections. They’re a solid choice if you need a straightforward, no-frills terminal that gets the job done.
- Wide temperature tolerance
- Correct gauge range
- Pack of 20
- No seal included
- Brand less known
Crimp Supply Metri-Pack Kit – Comprehensive Multi-Series Assortment
Brand: Crimp Supply
A versatile kit that prepares you for most Metri-Pack connector repairs.
This kit from Crimp Supply is a treasure trove for anyone working on multiple vehicle types. It includes terminals from the Metri-Pack 150, 280, and 480 series, covering both male and female, sealed and unsealed configurations. The part numbers listed (like 12129493 and 12066214) are genuine OEM references, so you know you’re getting the right fit for factory connectors.
With a wire gauge range of 20-12, this kit handles everything from delicate signal wires to thicker power cables. The inclusion of seals means you can create weatherproof connections right out of the box. If you’re a DIYer or professional who encounters various GM connectors, this assortment saves you from buying separate packs for each series.
- Covers 150, 280, 480 series
- Includes seals
- OEM part numbers
- No crimping tool included
- May have extra parts
Delphi GT 150 Sealed Female Terminals – Precision 18-16 Gauge
Brand: Delphi Packard (PED)
Top-tier OEM terminals for critical GT 150 applications.
These Delphi Packard terminals are the real deal, made by the original equipment manufacturer. The part number 12191819 is a genuine GT 150 series female sealed terminal, designed for 18-16 gauge wire. The GT 150 series is known for its compact size and high-density applications, often found in engine control modules and body control modules.
The sealed design includes a built-in wire seal that prevents moisture and dirt from entering the connector, which is critical for long-term reliability. With a pack of 25, you have plenty for a full connector rebuild. If you’re working on a modern GM vehicle, these terminals will match the factory quality exactly.
- Genuine Delphi part
- Sealed for weatherproofing
- Exact OEM fit
- Only for 18-16 gauge
- Premium price
Aptiv Metri-Pack 280 Female Terminals – Heavy-Duty 10-12 Gauge
Brand: Aptiv (formerly Delphi)
A sturdy choice for demanding, high-amp automotive connections.
When you need to handle thicker wires, these Aptiv (formerly Delphi) terminals are up to the task. They accommodate 10-12 AWG wire, making them suitable for higher-current circuits like headlights, fuel pumps, or auxiliary lighting. The stainless steel construction is robust, ensuring a secure connection that won’t corrode easily.
The screw terminals make attachment simple and secure, and the heat resistance up to 125°C means they can sit near engines or exhaust components without degrading. With a pack of 15, you get enough for a few heavy-duty connections. This is a great pick for custom wiring projects where reliability is non-negotiable.
- Stainless steel build
- Handles 10-12 AWG
- Heat resistant to 125°C
- Only 15 per pack
- Screw type may not suit all
iCrimp Weather Pack Crimper – Essential Tool for Sealed Terminals
Brand: IWISS
An indispensable tool for achieving reliable, weatherproof crimps.
This iCrimp tool is a game-changer for anyone serious about Metri-Pack connections. It’s designed specifically for the 150 and 280 series, as well as Weather Pack connectors, and it crimps both the conductor and insulation wings in a two-step process. This ensures a proper, factory-style crimp that prevents wire pullout and corrosion.
The tool also handles open barrel contacts like D-subminiature, making it versatile beyond just Metri-Pack. The three wire crimping and two seal crimping positions cover a range of wire sizes, so you can use it for various projects. If you’re tired of using generic crimpers that crush terminals, this tool will give you professional results every time.
- Two-step crimp process
- Works on 150 & 280 series
- Also handles D-sub
- Requires practice
- Not for 480 series
Delphi GT 280 Sealed Female Terminals – Durable 18-16 Gauge
Brand: Delphi Packard (PED)
Reliable OEM terminals for demanding under-hood applications.
Another genuine Delphi Packard offering, these GT 280 series terminals are built for larger connectors that need more current capacity. The part number 15304719 is a female sealed terminal for 18-16 gauge wire, and the GT 280 series is known for its robustness in powertrain and chassis applications.
The sealed design is perfect for exposed areas like under the hood or near wheel wells, where moisture and dirt are common. With a pack of 25, you can tackle multiple repairs or a full harness rebuild. If you want the peace of mind that comes with OEM parts, these are a top pick.
- OEM Delphi quality
- Sealed for harsh environments
- Pack of 25
- Limited to 18-16 gauge
- Higher cost
Aptiv Terminal Removal Tool – Extract Pins Without Damage
Brand: Aptiv (formerly Delphi)
A handy tool that makes terminal removal quick and safe.
If you’ve ever tried to remove a terminal from a connector housing, you know how frustrating it can be without the right tool. This Aptiv removal tool is designed to work with the 150, 280, GT 150, and GT 280 series, making it a versatile addition to your toolbox. It allows you to release the locking tangs and slide the terminal out cleanly.
Using this tool prevents damage to both the terminal and the connector housing, which is crucial if you’re reusing parts or troubleshooting a wiring issue. It’s a simple, inexpensive tool that saves you time and frustration. Whether you’re a professional tech or a DIYer, this is a must-have for any Metri-Pack work.
- Compatible with multiple series
- Prevents connector damage
- Simple to use
- Only for removal
- Plastic handle may wear
Gratux GT 150 Female Terminals – Compact 22-20 Gauge Sealed
Brand: Gratux
A solid choice for small-gauge, sealed connections in tight spots.
For smaller gauge wires, these Gratux terminals are a perfect fit. The part number 12191818 is a GT 150 series female sealed terminal, designed for 22-20 AWG wire. This is ideal for low-current applications like sensors, switches, and control modules where space is tight.
The sealed design ensures protection against moisture, and the pack of 25 gives you enough for several connectors. While not an OEM brand, Gratux offers a reliable aftermarket alternative that meets the same specifications. If you’re working on delicate electronics, these terminals provide a secure connection without the bulk.
- Fits 22-20 AWG
- Sealed for protection
- Compact size
- Aftermarket brand
- Not for high current
AYZAR 430-Piece Terminal Kit – Massive Assortment for All Projects
Brand: AYZAR
A massive, versatile kit that handles a wide range of wiring needs.
This AYZAR kit is a comprehensive solution for anyone who wants to have terminals on hand for any situation. It includes 430 pieces across 28 different types, covering sizes from 0.6mm to 6.3mm. That means you’ll have terminals for everything from tiny signal wires to heavy power cables.
The terminals are made of tin-plated copper for excellent conductivity and corrosion resistance. They can be crimped or soldered, giving you flexibility in how you make connections. Whether you’re working on cars, motorcycles, boats, or other equipment, this kit has you covered. It’s a great value for the sheer variety and quantity.
- 430 pieces, 28 types
- Tin-plated copper
- Crimp or solder
- Not all Metri-Pack specific
- May include unused sizes
Metri-Pack 630 Female Terminals – High-Current 16-14 AWG
Brand: Generic
A robust terminal for high-current applications that need dependable performance.
When you need to handle serious current, the Metri-Pack 630 series is the answer. These female terminals, part number 12015870, are rated for 46 amps, making them suitable for heavy loads like winches, inverters, or auxiliary batteries. They accept 16-14 AWG wire, which is typical for such applications.
The cable insulation range is 3.97-2.48 mm, and the cable range is 2.00-1.00 mm², ensuring a proper fit. With a pack of 20, you have enough for a few high-power connections. If you’re building a custom electrical system that demands reliability, these terminals are a top pick.
- Rated for 46 amps
- Fits 16-14 AWG
- Pack of 20
- Generic brand
- Limited to 630 series
Buyer’s Guide: What to Consider
Choosing the right Metri-Pack terminal involves understanding your vehicle’s connector type, wire gauge, and environmental exposure. This guide highlights key factors to consider, ensuring you select the correct terminals and tools for a secure, lasting electrical connection.
- Series Compatibility: Metri-Pack terminals come in different series (150, 280, 480, 630, GT 150, GT 280) that correspond to connector size and current rating. Always match the terminal series to your vehicle's connector to ensure a proper fit and avoid electrical issues.
- Wire Gauge: Each terminal is designed for a specific wire gauge range (e.g., 18-16 AWG or 10-12 AWG). Using the wrong gauge can lead to poor crimps, high resistance, or terminal damage. Check your wire size before purchasing.
- Sealed vs. Unsealed: Sealed terminals include a rubber seal that protects against moisture and contaminants, ideal for under-hood or exposed locations. Unsealed terminals are cheaper but only suitable for dry, protected areas like the interior.
- Crimping Tool: A proper crimping tool, like the iCrimp Weather Pack, is essential for creating reliable connections. Generic crimpers can crush terminals or fail to crimp the insulation wings correctly, leading to failures.
- Quality and Brand: OEM brands like Delphi, Aptiv, and Packard offer guaranteed fit and durability, but aftermarket options can be cost-effective. Look for tin-plated copper or stainless steel for corrosion resistance and long life.
Conclusion
Selecting the right Metri-Pack terminals is crucial for reliable automotive wiring. From the OEM-grade Delphi terminals to the versatile AYZAR kit, each product serves a specific purpose. Consider your wire gauge, series, and whether you need sealed connections to make the best choice.
For most DIYers, the Crimp Supply kit offers excellent value, while professionals may prefer the precision of Delphi terminals. Don’t forget a quality crimping tool like the iCrimp to ensure your connections are solid. With the right terminals and tools, you can tackle any wiring project with confidence.
Erica Steven is the founder and lead writer of WorstBrands, a site dedicated to providing honest and trustworthy reviews about outdoor gear and fashion products.
With a passion for exploring the great outdoors and staying up to date on the latest fashion trends, Erica uses her expertise to provide valuable insights into the products that matter most to her readers.
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