Chevrolet GMC 3500 Truck Safety, Air & Electrical

Enhance your Chevrolet GMC 3500 truck with high-quality safety, air, and electrical parts from 4 State Trucks. From 7-foot custom wiring harnesses to 4-way flat to 7-way RV blade adapters, and die-cast metal 6-way connectors, we have it all. Ensure your truck's performance and reliability with our top-notch parts and accessories made fit for your truck.

Product
Qty in Cart
Quantity
Price
Subtotal

Brass Air Line Male Elbow 3/8 X 1/4 Inch For Nylon Tubing

PARTS DISTRIBUTING

MSRP:

$10.19

Was:

Brass Elbow Male 90 Degree 3/8 X 1/4 Inch For Nylon Tubing* High Quality Fitting* Brass* 3/8 Inch X 1/4 Inch* 90 Degree* For Nylon Tubing* Fits 3/8 Inch Plastic Airline X 1/4 Inch Mnpt* Sold...

N6964

SKU:

N6964

Material Options:

Brass

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$10.19

Was:

Qty in Cart: 0

Price:

MSRP:

$10.19

Was:

Subtotal:
Push In Male Elbow 45 Degree 1/4 X 1/8 Inch

TRAMEC SLOAN

MSRP:

$9.17

Was:

45 Degree 1/4 X 1/8 Inch Nylon Tubing Brass Elbow* High Quality Male Elbow* 1/4 Inch x 1/8 Inch* 45 Degree* Push In* Sold Individually* Warranty On Male Elbow Against Defects In Workmanship &...

NP7942

SKU:

NP7942

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

Product Type:

Air, Electrical, & Safety

MSRP:

$9.17

Was:

Qty in Cart: 0

Price:

MSRP:

$9.17

Was:

Subtotal:
1/8 x 1/16 Inch Nylon Male Push-to-Connect Coupler

PARTS DISTRIBUTING

MSRP:

$12.84

Was:

1/8-Inch OD x 1/8-Inch Male NPT Air Line Connector Fitting* High Quality Connector* 1/8 Inch X 1/8 Inch* Push-On Male* Sold Individually* Warranty On Connectors Against Defects In Workmanship &...

NP6822

SKU:

NP6822

Truck Class:

Heavy Duty

Make:

Universal Items

Material Options:

Nylon

Ready To Ship:

Yes

MSRP:

$12.84

Was:

Qty in Cart: 0

Price:

MSRP:

$12.84

Was:

Subtotal:
3/8 X 1/8 Inch Brass Straight Male Connector Brass Fitting

PARTS DISTRIBUTING

MSRP:

$7.13

Was:

Brass Air Line Connector Male 3/8 X 1/8 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 3/8 Inch X 1/8 Inch* For Nylon Tubing* Fits 3/8 Inch Plastic Airline X 1/8 Inch Mnpt* Sold...

N6862

SKU:

N6862

Material Options:

Brass

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$7.13

Was:

Qty in Cart: 0

Price:

MSRP:

$7.13

Was:

Subtotal:
1/2 X 1/4 Inch Brass Straight Male Connector Brass Fitting

TRAMEC SLOAN

MSRP:

$9.17

Was:

Brass Connector Male 1/2 X 1/4 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 1/2 Inch X 1/4 Inch * For Nylon Tubing* Fits 1/2 Inch Plastic Airline X 1/4 Inch Mnpt* Sold Individually*...

N6884

SKU:

N6884

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$9.17

Was:

Qty in Cart: 0

Price:

MSRP:

$9.17

Was:

Subtotal:
On Sale

Limited Quantity Available

1/4 X 1/4 Inch Nylon Push On Male Connector

TRAMEC SLOAN

MSRP:

Now: $2.71

Was: $6.99

Nylon Push On Male Connector 1/4 X 1/4* High Quality Male Connector* Nylon* 1/4 Inch x 1/4 Inch* Push On Style* Sold Individually* Warranty On Male Connector Against Defects In Workmanship & Material...

NP6844

SKU:

NP6844

Material Options:

Nylon

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

Now: $2.71

Was: $6.99

Qty in Cart: 0

Price:

MSRP:

Now: $2.71

Was: $6.99

Subtotal:
TPHD 1/4 Inch Air Brake Push-On Union Tee NP64

TPHD

MSRP:

$12.46

Was:

Push to Connect Fitting 1/4 Inch Tube OD Tee Union DOT Air Fittings Air Brake Line Fitting* High Quality Union Tee* Brass* 1/4 Inch* Sold Individually* Warranty On Union Tees Against Defects In...

NP644

SKU:

NP644

Material Options:

Brass

Truck Class:

Heavy Duty

Diameter Options:

1/4 Inch

Make:

Universal Items

Ready To Ship:

Yes

Product Type:

Air, Electrical, & Safety

MSRP:

$12.46

Was:

Qty in Cart: 0

Price:

MSRP:

$12.46

Was:

Subtotal:
3/4 X 3/4 Inch Brass Male Connector For Nylon Tubing

PARTS DISTRIBUTING

MSRP:

$21.86

Was:

Brass Connector Male 3/4 X 3/4 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 3/4 Inch X 3/4 Inch* Male* For Nylon Tubing* Sold Individually* Warranty On Fitting Straights Against...

N681212

SKU:

N681212

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$21.86

Was:

Qty in Cart: 0

Price:

MSRP:

$21.86

Was:

Subtotal:
5/8 X 1/2 Inch Brass Straight Male Connector Brass Fitting

TRAMEC SLOAN

MSRP:

$7.63

Was:

Brass Air Line Connector Male 5/8 X 1/2 Inch For Nylon Tubing* High Quality Fitting Straight* Brass* 5/8 Inch X 1/2 Inch* For Nylon Tubing* Fits 5/8 Inch Plastic Airline X 1/2 Inch Mnpt* Sold...

N68108

SKU:

N68108

Material Options:

Brass

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

Product Type:

Air, Electrical, & Safety

MSRP:

$7.63

Was:

Qty in Cart: 0

Price:

MSRP:

$7.63

Was:

Subtotal:
Air Brake Tube Fitting - 45 Degree Male Elbow 1/4 x 1/4 Inch

PARTS DISTRIBUTING

MSRP:

$6.11

Was:

Male 45 Degree Brass Elbow Air Brake Tube FittingThis Brass Elbow Air Brake Tube Fitting offers a strong and reliable connection. Made from corrosion-resistant brass, it withstands high temperatures...

N7944

SKU:

N7944

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

Product Type:

Engine Parts

MSRP:

$6.11

Was:

Qty in Cart: 0

Price:

MSRP:

$6.11

Was:

Subtotal:
TPHD 3/8 Inch Brass Push Type Union Tee

TPHD

MSRP:

$21.47

Was:

3/8 Inch Air Line Union Tee Push Type By TPHD* High Quality Union Tee* Brass* 3/8 Inch* Push Type * Sold Individually* Warranty On Union Tees Against Defects In Workmanship & Material From Date Of...

NP646

SKU:

NP646

Truck Class:

Heavy Duty

Material Options:

Brass

Diameter Options:

3/8 Inch

Make:

Universal Items

Product Type:

Engine Parts

Ready To Ship:

Yes

MSRP:

$21.47

Was:

Qty in Cart: 0

Price:

MSRP:

$21.47

Was:

Subtotal:
On Sale

Limited Quantity Available

5/8 Inch Inserts For Plastic Air Line

PARTS DISTRIBUTING

MSRP:

Now: $0.17

Was: $1.52

5/8 Inch Inserts For Plastic Air Line* High Quality Air Line Insert* Made Of Nylon* 5/8 Inch* For Plastic Air Line* Sold As Package (25 Pkg)* Warranty On Air Line Insert Against Defects In...

N6310

SKU:

N6310

Material Options:

Nylon

Truck Class:

Heavy Duty

Make:

Universal Items

Diameter Options:

5/8 Inch

Ready To Ship:

Yes

MSRP:

Now: $0.17

Was: $1.52

Qty in Cart: 0

Price:

MSRP:

Now: $0.17

Was: $1.52

Subtotal:
3/4 Inch Nylon Air Brake Tubing Insert For Plastic Air Line

PARTS DISTRIBUTING

MSRP:

$6.11

Was:

3/4 Inch Nylon Air Brake Tubing Insert For Plastic Air Line* High Quality Air Brake Tubing Insert* Nylon* 3/4 Inch* For Plastic Air Line * Sold Individually* Warranty On Air Brake Tubing Inserts...

N6312

SKU:

N6312

Truck Class:

Heavy Duty

Make:

Universal Items

Diameter Options:

3/4 Inch

Material Options:

Nylon

Ready To Ship:

Yes

MSRP:

$6.11

Was:

Qty in Cart: 0

Price:

MSRP:

$6.11

Was:

Subtotal:
Brass Male Elbow 90 Degree 1/2 X 3/8 Inch For Nylon Tubing

TRAMEC SLOAN

MSRP:

$9.09

Was:

Brass Elbow Male 90 Degree 1/2 X 3/8 Inch For Nylon Tubing* High Quality Elbow* Brass* 1/2 Inch X 3/8 Inch * 90 Degree* For Nylon Tubing* Fits 1/2Inch Plastic Airline X 3/8 Inch Mnpt* Sold...

N6986

SKU:

N6986

Material Options:

Brass

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

Product Type:

Air, Electrical, & Safety

MSRP:

$9.09

Was:

Qty in Cart: 0

Price:

MSRP:

$9.09

Was:

Subtotal:
Air Line Fitting 3/8 X 1/4 45 Inch

PARTS DISTRIBUTING

MSRP:

$5.44

Was:

Fitting Air Line 3/8 X 1/4 45 Inch* High Quality Air Line Fitting* 3/8 X 1/4 45 Inch* Sold Individually* Warranty On Air Lines Against Defects In Workmanship & Material From Date Of Purchase*** High...

N7964

SKU:

N7964

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$5.44

Was:

Qty in Cart: 0

Price:

MSRP:

$5.44

Was:

Subtotal:
3/8 Inch Brass Compression Nut For Nylon Tubing

PARTS DISTRIBUTING

MSRP:

$4.07

Was:

3/8 Inch Nylon Tubing Brass NutThis 3/8 inch nylon tubing brass nut provides leak-free connections. Made for durability, these fittings resist wear, chemicals, and vibration. They work well in many...

N616

SKU:

N616

Material Options:

Brass

Truck Class:

Heavy Duty

Diameter Options:

3/8 Inch

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$4.07

Was:

Qty in Cart: 0

Price:

MSRP:

$4.07

Was:

Subtotal:
1/2 Inch Brass Compression Nuts - 5 Pack

PARTS DISTRIBUTING

MSRP:

$10.19

Was:

1/2 Inch Brass Compression NutsThese 1/2 inch brass compression nuts work with copper, brass, or plastic tubing. They resist corrosion and are built to last. These fittings handle pressures from 125...

N618

SKU:

N618

Material Options:

Brass

Truck Class:

Heavy Duty

Diameter Options:

1/2 Inch

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$10.19

Was:

Qty in Cart: 0

Price:

MSRP:

$10.19

Was:

Subtotal:
Air Line Fitting - Female Elbow 90 Degree 3/8 X 3/8 Inch

PARTS DISTRIBUTING

MSRP:

$21.41

Was:

Female 90 Elbow 3/8 X 3/8This air brake tube fitting meets SAE and DOT FMVSS 571.106 specifications. It requires no special tubing preparation and offers excellent vibration resistance. Made from...

N7066

SKU:

N7066

Truck Class:

Heavy Duty

Make:

Universal Items

Ready To Ship:

Yes

MSRP:

$21.41

Was:

Qty in Cart: 0

Price:

MSRP:

$21.41

Was:

Subtotal:
Brass Air Line Male Elbow 90 Degree 1/4 X 1/8 Inch For Nylon Tubing

TRAMEC SLOAN

MSRP:

$8.15

Was:

90 Degree Brass Elbow Male 1/4 X 1/8 Inch For Nylon TubingThe Male 90 degree 1/4 inch Brass Elbow is ideal for connecting 1/8 inch nylon tubes in tight spaces. Its durable brass construction ensures...

N6942

SKU:

N6942

Material Options:

Brass

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$8.15

Was:

Qty in Cart: 0

Price:

MSRP:

$8.15

Was:

Subtotal:
Brass Air Line Sleeve 3/4 Inch For Nylon Tubing

TRAMEC SLOAN

MSRP:

$4.02

Was:

3/4 Inch Air Line Sleeve For Nylon Tubing* High Quality Air Line Sleeve* Made Of Brass* 3/4 Inch* For Nylon Tubing* Sold As Package (10 Per Pkg)* Warranty On Air Line Sleeve Against Defects In...

N6012

SKU:

N6012

Material Options:

Brass

Truck Class:

Heavy Duty

Diameter Options:

3/4 Inch

Make:

Universal Items

Ready To Ship:

Yes

Product Type:

Air, Electrical, & Safety

MSRP:

$4.02

Was:

Qty in Cart: 0

Price:

MSRP:

$4.02

Was:

Subtotal:

Total: items /

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Upgrade your Chevrolet GMC 3500 Truck with essential safety, air, and electrical components for top performance. This product lineup includes trailer wiring, air brake parts, and safety accessories to ensure a smooth and reliable ride.

Frequently Asked Questions About Chevrolet GMC 3500 Truck Safety, Air & Electrical

What kinds of products are included in this category?

This category covers safety, air system, and electrical components for Chevrolet and GMC 3500 trucks, including items such as air horns, air lines and fittings, wiring components, lighting relays, switches, backup alarms, and related electrical accessories used to keep your truck safe, visible, and running the way it should.

Will these parts fit my specific model year of Chevrolet or GMC 3500?

Fitment can vary by model year and cab configuration, so it is important to check the compatibility details listed on each product page before ordering. If you are unsure whether a part matches your truck, our team can help you confirm fitment based on your VIN or truck specs before you buy.

Do these electrical and air components meet DOT requirements?

Many safety-related items, such as lighting and air system components, are manufactured to meet applicable DOT standards, and this will be noted on the product listing when it applies. If DOT compliance is required for your application, we recommend reviewing the specific product details or reaching out to us to confirm before purchasing.

Are these parts easy to install myself, or should I have a professional do it?

Some items, like switches or basic wiring accessories, are straightforward for anyone comfortable with basic tools and wiring. Others, such as air system components or more involved electrical installs, may require prior experience with truck electrical or air systems, or a qualified technician, to ensure everything is installed safely and functions correctly.

What should I do if a part arrives damaged or does not work as expected?

If a product arrives damaged, defective, or does not match what you ordered, contact our customer service team as soon as possible so we can help with a return, replacement, or troubleshooting. Keeping your order details handy will help us resolve the issue quickly.