Looking for the best GM steering fittings to upgrade your vehicle? We’ve tested and reviewed the top 10 options to help you find the perfect fit for a smoother, worry-free driving experience.
Upgrading your GM vehicle’s steering system starts with the right fittings. Whether you’re working on an LS swap or replacing old parts, quality adapters make all the difference. We’ve tested and reviewed the best GM steering fittings to save you time and hassle.
From leak-proof designs to easy installation, these fittings ensure reliable performance. They’re built to handle high-pressure systems and fit perfectly with GM, Chevy, Buick, and Cadillac models. Discover the top options that make your project smoother.
Find the perfect fit, upgrade with confidence, and drive worry-free.
List of Top 10 GM Steering Fittings
| Image | Title | Best For | Price |
|---|---|---|---|
 |
Everbuilt 6AN To 16mm & 6AN to 18mm Power Steering Fittings With O Rings Compatible for GM Chevy Buick Cadillac Power Steering Pump Gear Box Adapter fittings -6 To 16 & -6 to 18 |
This product is perfect for car enthusiasts and DIY mechanics working on GM vehicles. It’s ideal for LS swaps and power steering upgrades. |
|
 |
DUZFOREI 6AN to 16mm 6AN to 18mm Power Steering Fittings with O Rings Replacement for GM Chevy Buick Cadillac Power Steering Pump Gear Box Adapter Fittings |
This product is perfect for car owners who need reliable power steering fittings. It’s great for GM, Chevy, Buick, and Cadillac models. |
|
 |
WIKIBB LS Swap Parts Power Steering Line Adapter Fitting Carbon Steel LS Pump To 3/8” Flare Older Style Line M16-1.5 to 5/8-18 Suitable for Camaro GTO Silverado LS1 LSX LS3 Replacement 605SOL |
This adapter fitting is perfect for car enthusiasts and DIY mechanics who need to connect newer LS power steering pumps to older 3/8” flare lines. It’s ideal for Camaro, GTO, Silverado, and other GM vehicles with 605 power steering gearboxes. |
|
 |
Ebrmeiwo LS Swap Power Steering Pump Line Fitting Replacement Part, Use to Convert 3/8” Flare Older Style Lines M16-1.5 to 5/8-18, Fits GTO, CTSV LS1 LSX LS3 Vortec Truck 5.3L 4.8L 5.7L 6.0L LQ4 |
This LS Swap Power Steering Pump Line Fitting is perfect for car enthusiasts and DIY mechanics who need a reliable replacement part for their older GM vehicles. It’s ideal for those upgrading their power steering system with newer GM pumps. |
|
 |
6AN To 16mm & 6AN to 18mm Power Steering Fittings With O Rings Pump Gear Box Adapter -6 To 16 & -6 to 18 Black |
This product is perfect for car enthusiasts and DIY mechanics who need reliable power steering fittings. It’s ideal for 1980 and newer GM vehicles with 16mm and 18mm ports. |
|
 |
YKISON Upgraded 6AN Power Steering Fittings 5/8-18 and 11/16-18 Inverted Flare for GM Pumps/Rack |
This product is perfect for car enthusiasts and DIY mechanics who need reliable power steering fittings for their GM pumps or racks. It’s easy to use and fits well for oil, fuel, or coolant lines. |
|
 |
HiSport 6AN to 16mm & 6AN to 18mm Power Steering Fittings with O Rings Bump Tube – Compatible with GM Buick Chevy Cadillac |
This product is perfect for car owners who need reliable power steering fittings. It’s ideal for GM, Buick, Chevy, and Cadillac vehicles from 1980 onwards. |
|
 |
Speedway Motors Power Steering Box O-Ring to -6 AN Adapter Fitting Kit Compatible with 1980-Up GM Steering Boxes, Includes 16mm and 18mm Inverted Flare Steel Adapters |
This adapter fitting kit is perfect for car enthusiasts and DIY mechanics who want to upgrade their GM steering system. It’s ideal for 1980-up GM vehicles with O-ring style fittings, offering easy conversion to -6 AN hose connections for custom hose routing. |
|
 |
Speedway Motors Steel Steering Box Adapter Fitting Kit 1/2-20 and 5/8-18 Inverted Flare to -6 AN, Power Steering Box Hose Adapters for 1965-1979 GM Steering Boxes |
This adapter kit is perfect for car enthusiasts and mechanics working on classic GM vehicles. It’s ideal for upgrading power steering systems on 1965–1979 GM cars and trucks. |
|
 |
Speedway Motors Steel Power Steering Box Adapter Fitting 18mm x 1.5 IFM to -6 AN Straight Adapter Compatible with 1980 Up GM Steering Boxes with O Ring Seal |
This adapter fitting is perfect for car enthusiasts and mechanics working on GM vehicles from 1978 and newer. It’s ideal for connecting power steering boxes to -6 AN hose connections in tight engine spaces. |
Detailed Reviews
Discover the top 10 GM Steering Fittings handpicked for performance, durability, and ease of installation. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best value for your vehicle. Whether you’re upgrading an LS swap or replacing old parts, this guide has you covered. Dive in to find the perfect fit for your GM steering system and drive with confidence.
1. Everbuilt 6AN To 16mm & 6AN to 18mm Power Steering Fittings With O Rings Compatible for GM Chevy Buick Cadillac Power Steering Pump Gear Box Adapter fittings -6 To 16 & -6 to 18
Everbuilt Power Steering Fittings are perfect for GM vehicles. They fit Chevy, Buick, and Cadillac systems. These adapters work with LS swaps seamlessly.
The leak-proof design ensures reliable performance. Easy installation means no extra modifications are needed.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car enthusiasts and DIY mechanics working on GM vehicles. It’s ideal for LS swaps and power steering upgrades.
Ready to Purchase?
2. DUZFOREI 6AN to 16mm 6AN to 18mm Power Steering Fittings with O Rings Replacement for GM Chevy Buick Cadillac Power Steering Pump Gear Box Adapter Fittings
DUZFOREI Power Steering Fittings are perfect for GM, Chevy, Buick, and Cadillac. They come with O rings for a secure fit. These adapters are easy to install.
Made from durable aluminum, they last a long time. Precision manufacturing ensures smooth flow and reliable performance.
The package includes 6AN to 16mm and 6AN to 18mm fittings. After-sales service is ready to help if you have any issues.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car owners who need reliable power steering fittings. It’s great for GM, Chevy, Buick, and Cadillac models.
Ready to Purchase?
3. WIKIBB LS Swap Parts Power Steering Line Adapter Fitting Carbon Steel LS Pump To 3/8” Flare Older Style Line M16-1.5 to 5/8-18 Suitable for Camaro GTO Silverado LS1 LSX LS3 Replacement 605SOL
Upgrade your LS swap with the WIKIBB Power Steering Line Adapter Fitting. Made from high-quality carbon steel, it’s stronger and more durable than other options. It fits older GM 3/8″ flare lines perfectly, ensuring a leak-free connection.
This kit includes Viton O-rings and works with 1980 and later 605 power steering gearboxes. It’s compatible with popular models like Camaro, Corvette, and Silverado, making it a reliable replacement for your project.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This adapter fitting is perfect for car enthusiasts and DIY mechanics who need to connect newer LS power steering pumps to older 3/8” flare lines. It’s ideal for Camaro, GTO, Silverado, and other GM vehicles with 605 power steering gearboxes.
Ready to Purchase?
4. Ebrmeiwo LS Swap Power Steering Pump Line Fitting Replacement Part, Use to Convert 3/8” Flare Older Style Lines M16-1.5 to 5/8-18, Fits GTO, CTSV LS1 LSX LS3 Vortec Truck 5.3L 4.8L 5.7L 6.0L LQ4
The Ebrmeiwo LS Swap Power Steering Pump Line Fitting is a must-have replacement part for your vehicle. It converts older 3/8” flare lines to fit newer models. This part is easy to install and works well.
It fits many GM engines, like LS1, LS3, and Vortec Truck models. The package includes a fitting, Viton O-ring, and rubber washer. All parts are made of durable brass and rubber.
This fitting is built to last and resists rust. It saves you time by simplifying the swap process. Upgrade your steering system with confidence today.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This LS Swap Power Steering Pump Line Fitting is perfect for car enthusiasts and DIY mechanics who need a reliable replacement part for their older GM vehicles. It’s ideal for those upgrading their power steering system with newer GM pumps.
Ready to Purchase?
5. 6AN To 16mm & 6AN to 18mm Power Steering Fittings With O Rings Pump Gear Box Adapter -6 To 16 & -6 to 18 Black
Upgrade your power steering system with this 6AN to 16mm & 6AN to 18mm adapter kit. It’s perfect for 1980 and newer GM vehicles with 16mm and 18mm o-ring style ports. Made from aviation aluminum, it’s strong, durable, and anti-corrosion.
The kit includes two connectors, two o-rings, and fits GM metric boxes from 1978 onwards. Use it for braking, fuel delivery, engine mods, and more.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car enthusiasts and DIY mechanics who need reliable power steering fittings. It’s ideal for 1980 and newer GM vehicles with 16mm and 18mm ports.
Ready to Purchase?
6. YKISON Upgraded 6AN Power Steering Fittings 5/8-18 and 11/16-18 Inverted Flare for GM Pumps/Rack
The YKISON Upgraded 6AN Power Steering Fittings are designed for GM pumps and racks. They connect oil, fuel, and fluid lines with 5/8-18 and 11/16-18 inverted flare fittings.
Professional installation is recommended. The package includes two fittings as pictured. High performance meets usage standards.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car enthusiasts and DIY mechanics who need reliable power steering fittings for their GM pumps or racks. It’s easy to use and fits well for oil, fuel, or coolant lines.
Ready to Purchase?
7. HiSport 6AN to 16mm & 6AN to 18mm Power Steering Fittings with O Rings Bump Tube – Compatible with GM Buick Chevy Cadillac
The HiSport Power Steering Fittings are perfect for GM, Buick, Chevy, and Cadillac vehicles. They fit power steering systems from 1980 onwards. These fittings are made of durable aluminum, ensuring long-lasting performance.
Installation is simple and straightforward, though professional help is recommended. The kit includes one 6AN to 16mm fitting and one 6AN to 18mm fitting, both with O rings for a secure fit. Always check the fitment details to ensure compatibility with your vehicle.
You’ll receive two essential fittings in this package. They are designed for reliability and easy replacement.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This product is perfect for car owners who need reliable power steering fittings. It’s ideal for GM, Buick, Chevy, and Cadillac vehicles from 1980 onwards.
Ready to Purchase?
8. Speedway Motors Power Steering Box O-Ring to -6 AN Adapter Fitting Kit Compatible with 1980-Up GM Steering Boxes, Includes 16mm and 18mm Inverted Flare Steel Adapters
Upgrade your steering system with the Speedway Motors Power Steering Box O-Ring to -6 AN Adapter Fitting Kit. It converts metric O-ring ports to -6 AN hose connections. This allows for custom hose routing in your vehicle.
The kit is designed for GM steering boxes from 1980 and up. It includes 16mm and 18mm adapters with inverted flare male O-ring fittings. These adapters ensure a secure and leak-free connection.
Made from durable steel, this kit provides long-lasting performance. Its straight fitting design makes installation easy and keeps hose alignment clean. Enhance your steering setup with this reliable adapter kit.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This adapter fitting kit is perfect for car enthusiasts and DIY mechanics who want to upgrade their GM steering system. It’s ideal for 1980-up GM vehicles with O-ring style fittings, offering easy conversion to -6 AN hose connections for custom hose routing.
Ready to Purchase?
9. Speedway Motors Steel Steering Box Adapter Fitting Kit 1/2-20 and 5/8-18 Inverted Flare to -6 AN, Power Steering Box Hose Adapters for 1965-1979 GM Steering Boxes
The Speedway Motors Steel Steering Box Adapter Fitting Kit is perfect for GM steering boxes. It includes two steel adapters for easy upgrades. These fittings convert ports to -6 AN hose connections.
This kit works with 1965–1979 GM power steering boxes. It has 5/8″-18 and 1/2″-20 inverted flare fittings. These sizes fit common GM steering box ports.
Made of durable steel with zinc plating, these adapters last long. They are strong and reliable for steering systems. Perfect for custom power steering setups.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This adapter kit is perfect for car enthusiasts and mechanics working on classic GM vehicles. It’s ideal for upgrading power steering systems on 1965–1979 GM cars and trucks.
Ready to Purchase?
10. Speedway Motors Steel Power Steering Box Adapter Fitting 18mm x 1.5 IFM to -6 AN Straight Adapter Compatible with 1980 Up GM Steering Boxes with O Ring Seal
The Speedway Motors Steel Power Steering Box Adapter Fitting is a must-have for connecting GM power steering boxes to -6 AN hose connections. It’s durable, reliable, and perfect for tight engine bay installations.
Made from steel with a zinc-plated finish, it ensures long-term performance. Features 18mm x 1.5 metric threads and an O-ring seal for a secure fit. Compatible with 1978 and newer GM steering boxes.
| Pros | Cons |
|---|---|
|
|
Perfect For:
This adapter fitting is perfect for car enthusiasts and mechanics working on GM vehicles from 1978 and newer. It’s ideal for connecting power steering boxes to -6 AN hose connections in tight engine spaces.
Ready to Purchase?
Buying Guide
Upgrading your GM steering system starts with the right fittings. Quality adapters ensure reliable performance and easy installation. We’ve tested the best GM steering fittings to save you time and hassle.
Factors to Consider When Buying GM Steering Fittings:
-
Compatibility:
Ensure the fittings match your GM vehicle’s make and model. Check for specific sizes like 16mm or 18mm to avoid mismatches. -
Material:
Choose durable materials like aluminum, carbon steel, or brass. These resist corrosion and handle high-pressure systems well. -
Leak-Proof Design:
Look for fittings with O-rings or Viton seals to prevent leaks and ensure a secure connection. -
Ease of Installation:
Opt for fittings that require no extra modifications. Simple installation saves time and effort. -
Performance:
Select fittings that ensure smooth fluid flow and reliable performance under pressure. -
After-Sales Support:
Check if the brand offers customer service or warranty for added peace of mind. -
Price and Value:
Compare prices to find the best value without compromising on quality.
Upgrade with confidence and enjoy a worry-free driving experience with the right GM steering fittings.