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

TPHD 1/8 Inch Brass Close Nipple

TPHD

MSRP:

$6.23

Was:

Brass Close Nipple W/ 1/8 Inch Threads* High Quality Brass Close Nipple* Brass* 1/8 Inch* Sold Individually* Warranty On Brass Close Nipples Against Defects In Workmanship & Material From Date Of...

BP1122

SKU:

BP1122

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$6.23

Was:

Qty in Cart: 0

Price:

MSRP:

$6.23

Was:

Subtotal:
1/8 Inch Brass 45 Degree Street Elbow

PARTS DISTRIBUTING

MSRP:

$4.07

Was:

Brass 45 Degree Street Elbow W/ 1/8 Inch Threads* High Quality Street Elbow* Brass* 1/8 Inch* 45 Degree* Sold Individually* Warranty On Street Elbows Against Defects In Workmanship & Material From...

BP1242

SKU:

BP1242

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$4.07

Was:

Qty in Cart: 0

Price:

MSRP:

$4.07

Was:

Subtotal:
TPHD 1/2 Inch Brass Hose Adapter

TPHD

MSRP:

$14.94

Was:

1/2 x 1/2 Inch Brass Hose Adapter FPT To MPT* High Quality Hose Adapter* Brass* 1/2 Inch X 1/2 Inch* FPT To MPT Adapter* Sold Individually* Warranty On Hose Adapters Against Defects In Workmanship &...

BP12088

SKU:

BP12088

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$14.94

Was:

Qty in Cart: 0

Price:

MSRP:

$14.94

Was:

Subtotal:
3/8 x 1/8 Inch Brass Reducer Coupling

TRAMEC SLOAN

MSRP:

$7.06

Was:

Brass Reducer Coupling* High Quality Reducer Coupling* Brass* 3/8 Inch X 1/8 Inch* Sold Individually* Warranty On Reducer Couplings Against Defects In Workmanship & Material From Date Of Purchase***...

BP11962

SKU:

BP11962

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$7.06

Was:

Qty in Cart: 0

Price:

MSRP:

$7.06

Was:

Subtotal:
TPHD 1/2 Inch Brass Close Nipple

TPHD

MSRP:

$5.09

Was:

Brass Close Nipple W/ 1/2 Inch Threads By TPHD* High Quality Brass Close Nipple* Brass* 1/2 Inch* Sold Individually* Warranty On Brass Close Nipples Against Defects In Workmanship & Material From...

BP1128

SKU:

BP1128

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$5.09

Was:

Qty in Cart: 0

Price:

MSRP:

$5.09

Was:

Subtotal:
TPHD 1/2 Inch Brass Pipe Cap

TPHD

MSRP:

$3.05

Was:

Brass Pipe Cap W/ 1/2 Inch Threads* High Quality Pipe Cap Hex* Brass* 1/2 Inch* Sold Individually* Warranty On Pipe Cap Hex Against Defects In Workmanship & Material From Date Of Purchase*** High...

BP1088

SKU:

BP1088

Truck Class:

Universal

Diameter Options:

1/2 Inch

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$3.05

Was:

Qty in Cart: 0

Price:

MSRP:

$3.05

Was:

Subtotal:
TPHD 1/4 Inch Brass Coupling

TPHD

MSRP:

$9.10

Was:

Brass Coupling W/ 1/4 Inch Threads* High Quality Coupling* Brass* 1/4 Inch* Sold Individually* Warranty On Couplings Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BP1034

SKU:

BP1034

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$9.10

Was:

Qty in Cart: 0

Price:

MSRP:

$9.10

Was:

Subtotal:
TPHD 1/8 Inch Brass Union Tee

TPHD

MSRP:

$8.15

Was:

Brass Union Tee W/ 1/8 Inch Threads* High Quality Pipe Tee* Brass* 1/8 Inch* Sold Individually* Warranty On Pipe Tees Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BP1012

SKU:

BP1012

Truck Class:

Heavy Duty

Material Options:

Brass

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:
TPHD 1/8 Inch Brass Hex Nipple

TPHD

MSRP:

$13.25

Was:

Brass Hex Nipple W/ 1/8 Inch Threads* High Quality Hex Nipple* Brass* 1/8 Inch* Sold Individually* Warranty On Hex Nipples Against Defects In Workmanship & Material From Date Of Purchase*** High...

BP1222

SKU:

BP1222

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$13.25

Was:

Qty in Cart: 0

Price:

MSRP:

$13.25

Was:

Subtotal:
3/8 x 1/8 Inch Female To Male Hose Adapter

PARTS DISTRIBUTING

MSRP:

$4.07

Was:

Female To Male Brass Hose AdapterFemale To Male Adapter* High Quality Adapter* 3/8 Inch x 1/8 Inch* Sold Individually* Warranty On Female To Male Adapter Against Defects In Workmanship & Material...

BP12062

SKU:

BP12062

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$4.07

Was:

Qty in Cart: 0

Price:

MSRP:

$4.07

Was:

Subtotal:
1/4 Inch Brass Recessed Hex Head Plug

TRAMEC SLOAN

MSRP:

$4.32

Was:

Brass Recessed Hex Head Plug W/ 1/4 Inch Threads* High Quality Recessed Hex Head Plug* Brass* 1/4 Inch* Sold Individually* Warranty On Recessed Hex Head Plugs Against Defects In Workmanship &...

BP1184

SKU:

BP1184

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$4.32

Was:

Qty in Cart: 0

Price:

MSRP:

$4.32

Was:

Subtotal:
TPHD 1/2 x 1 1/2 Inch Brass Long Nipple

TPHD

MSRP:

$11.21

Was:

Brass Reducer Coupling* High Quality Brass Long Nipple* Brass* 1/2 Inch X 1-1/2 Inch* Sold Individually* Warranty On Brass Long Nipples Against Defects In Workmanship & Material From Date Of...

BP113815

SKU:

BP113815

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$11.21

Was:

Qty in Cart: 0

Price:

MSRP:

$11.21

Was:

Subtotal:
TPHD 1/8 x 2 Inch Brass Long Nipple

TPHD

MSRP:

$2.96

Was:

Brass Reducer Coupling* High Quality Brass Long Nipple* Brass* 1/8 Inch X 2 Inch* Sold Individually* Warranty On Brass Long Nipples Against Defects In Workmanship & Material From Date Of Purchase***...

BP113220

SKU:

BP113220

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$2.96

Was:

Qty in Cart: 0

Price:

MSRP:

$2.96

Was:

Subtotal:
1/8 Inch Brass Pipe Cap

PARTS DISTRIBUTING

MSRP:

$7.13

Was:

Brass Pipe Cap W/ 1/8 Inch Threads* High Quality Pipe Cap Hex* Brass* 1/8 Inch* Sold Individually* Warranty On Pipe Cap Hex Against Defects In Workmanship & Material From Date Of Purchase*** High...

BP1082

SKU:

BP1082

Truck Class:

Heavy Duty

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$7.13

Was:

Qty in Cart: 0

Price:

MSRP:

$7.13

Was:

Subtotal:
TPHD 3/8 Inch Brass Union Tee

TPHD

MSRP:

$7.13

Was:

Brass Union Tee W/ 3/8 Inch Threads* High Quality Pipe Tee* Brass* 3/8 Inch* Sold Individually* Warranty On Pipe Tees Against Defects In Workmanship & Material From Date Of Purchase*** High Quality...

BP1016

SKU:

BP1016

Truck Class:

Universal

Material Options:

Brass

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$7.13

Was:

Qty in Cart: 0

Price:

MSRP:

$7.13

Was:

Subtotal:
On Sale

FREE SHIPPING OVER $249

Limited Quantity Available

2 Wire Alternator Extender Connector For Transistorized Alternators W/ Internal Regulator

AFTERMARKET

MSRP:

Now: $2.22

Was: $4.83

2 Wire Alternator Extender Connector, GM 1971 And NewerThis 2-wire GM alternator extender connector is made for GM vehicles from 1971 and newer with transistorized alternators that have internal...

29-16030006

SKU:

29-16030006

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

Now: $2.22

Was: $4.83

Qty in Cart: 0

Price:

MSRP:

Now: $2.22

Was: $4.83

Subtotal:
FREE SHIPPING OVER $249

Universal 2 Wire Halogen Low Beam Headlight Connector

AFTERMARKET

MSRP:

$4.93

Was:

2 Wire Halogen Low Beam Headlight Connector Metri-PackThis 2-wire halogen headlight connector replaces damaged connections for low beam headlights using 9006 bulbs. It fits many vehicles from 1987...

29-16030008

SKU:

29-16030008

Truck Class:

Heavy Duty

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$4.93

Was:

Qty in Cart: 0

Price:

MSRP:

$4.93

Was:

Subtotal:
FREE SHIPPING OVER $249

Ignition Switch W/ 4 Position Lock Tumbler & 4 Screw Terminals For 3/4 Inch to 1 Inch Panel Hole

AFTERMARKET

MSRP:

$17.13

Was:

Ignition Switch W/ 4 Position Lock Tumbler That Fits 3/4 Inch to 1 Inch Panel HoleUniversal 4-position ignition switch fits cars, trucks, boats and heavy equipment. Features key lock security with...

09-16200066

SKU:

09-16200066

Truck Class:

Universal

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$17.13

Was:

Qty in Cart: 0

Price:

MSRP:

$17.13

Was:

Subtotal:
FREE SHIPPING OVER $249

Illuminated Red Push Pull Switch, 15A At 12V, W/ 2 Terminals & .250 Tabs For 1/2 Inch Hole

AFTERMARKET

MSRP:

$10.71

Was:

Illuminated Push Pull Switch That Fits 1/2 Inch HoleRed illuminated push-pull switch rated for 15 amps at 12V, featuring SPST design and 1/2" mounting. Perfect for dash panels, equipment controls,...

09-16200062

SKU:

09-16200062

Truck Class:

Universal

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

Ready To Ship:

Yes

MSRP:

$10.71

Was:

Qty in Cart: 0

Price:

MSRP:

$10.71

Was:

Subtotal:
FREE SHIPPING OVER $249

Momentary Starter Switch 10A At 12V, 2 Screw Terminals W/ 5/8 Inch Mounting Stem For 1 Inch Panel Mount

AFTERMARKET

MSRP:

$18.21

Was:

Brass W/ Nickle Plating Facing Momentary Starter Switch W/ 5/8 Inch Mounting Stem That Fits 1 Inch Panel MountAll-brass starter switch with nickel-plated face fits classic cars, hot rods, and vintage...

09-16200058

SKU:

09-16200058

Truck Class:

Universal

Make:

Universal Items

Product Type:

Air, Electrical, & Safety

MSRP:

$18.21

Was:

Qty in Cart: 0

Price:

MSRP:

$18.21

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.