Peterbilt 379 Parts
At 4 State Trucks, you’ll find everything you need to keep your iconic 379 model running strong and looking sharp. From bumpers and exhausts to fuel tanks, fenders, and chrome trim, we’ve got Peterbilt accessories and parts designed to fit your specific model year (87’ – 07’). Whether it’s a full-body restoration, a small component replacement, or a custom upgrade, our lineup has what you need.
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- Price
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1/4 Inch Brass Union Elbow
AUTOMANN USA
$6.92Nylon Air Brake Union 90 Elbow 1/4 Inch* High Quality Union Elbow* Brass* 1/4 Inch* Sold Individually* Warranty On Union Elbows Against Defects In Workmanship & Material From Date Of Purchase*** High...09-05170120- SKU:
- 09-05170120
- Product Type:
- Air, Electrical, & Safety
- Material Options:
- Brass
- Diameter Options:
- 1/4 Inch
- Make:
- Universal Items
$6.92Qty in Cart: 0Price:$6.92Subtotal: -
MGM ADB Spring Brake TRB2424DT
AFTERMARKET
$265.99Replacement Air Disc Brake Chamber* High Quality Spring Brake* Nylon Diaphragms* Aluminum Center* 2.25 Inch Push Rod* 2.5 Inch Stroke* Epoxy Coated Head* Non-Pressure Chamber* Push Rod* Return...09-05170112- SKU:
- 09-05170112
- Product Type:
- Frame & Chassis
- Make:
- Universal Items
- Material Options:
- Nylon
$265.99Qty in Cart: 0Price:$265.99Subtotal: -
Crewson Type Slack Adjuster 1-1/4 In-24 X 5.5 Inch Arm - Straight Clevis
AFTERMARKET
$98.99Crewson Type Slack Adjuster 5.5 Inch Arm With Straight ClevisThis Crewson-style automatic slack adjuster has a 5.5-inch arm. It comes with a straight clevis and features a 1-1/4-inch-24 thread.* High...09-05170108- SKU:
- 09-05170108
- Product Type:
- Frame & Chassis
- Make:
- Universal Items
$98.99Qty in Cart: 0Price:$98.99Subtotal: -
MGM Spring Brake TR3030T Welded Yoke
AFTERMARKET
$325.99Standard Stroke Spring Brake Chamber with Welded Yoke* High Quality Spring Brake* Neoprene* 4.20 Inch* Combination Welded* Made In USA* Sold Individually* Warranty On Spring Brakes Against Defects In...09-05170113- SKU:
- 09-05170113
- Product Type:
- Frame & Chassis
- Make:
- Universal Items
$325.99Qty in Cart: 0Price:$325.99Subtotal: -
Brake Lining 20K RP628C RSD
AFTERMARKET
$112.99Replacement Heavy Duty Brake Lining 20K* High Quality Brake Lining* Dimensions: - 16.50 Inch Drum Diameter - 8.625 Inch Shoe Width* Rating- 20K LB Fleet Premium Heavy Duty* Made In USA* Sold...09-05170114- SKU:
- 09-05170114
- Product Type:
- Frame & Chassis
- Diameter Options:
- 16 1/2 Inch
- Width Options:
- 8 1/2 Inch
- Make:
- Universal Items
$112.99Qty in Cart: 0Price:$112.99Subtotal: -
Bendix Type Horn Valve HV3 228928, 1676702C1, 86RD13A
AUTOMANN USA
$23.05Cab Mounted Truck Air Horn ValveMount this durable metal valve in your cab for reliable air horn operation. Features standardized ports for easy installation.* High Quality Horn Valve* Dimensions: -...09-05130006- SKU:
- 09-05130006
- Product Type:
- Air, Electrical, & Safety
- Make:
- Universal Items
$23.05Qty in Cart: 0Price:$23.05Subtotal: -
5/8 Inch X 1/2 NPT Male Run Brass Tee DOT 271NTA108, VS271NTA108
AUTOMANN USA
$22.89Nylon Air Brake Male Run TeeMale Run Tee utilize a ribbed sleeve for compression and positive grip. Fittings meet SAE and D.O.T. specifications.* High Quality Male Run Tee Dot* Brass* 5/8 Inch X 1/2...09-05040023- SKU:
- 09-05040023
- Product Type:
- Air, Electrical, & Safety
- Material Options:
- Brass
- Make:
- Universal Items
$22.89Qty in Cart: 0Price:$22.89Subtotal: -
Crewson Type Automatic Slack Adjuster 5.5 Inch Replaces CB25300, CB52336, E6990
AFTERMARKET
$98.99Crewson Type Automatic Slack Adjuster 1.25 -24 X 5.5 Inch Arm With Offset ClevisLooking for a heavy-duty automatic slack adjuster? This Crewson-style unit comes with a 5.5-inch arm and features a...09-05170106- SKU:
- 09-05170106
- Product Type:
- Frame & Chassis
- Make:
- Universal Items
$98.99Qty in Cart: 0Price:$98.99Subtotal: -
MGM ADB Spring Brake TRB2424DT051, K043270
AFTERMARKET
$531.99Air Brake Chamber - Combination, Air Disc ModelThis MGM ADB spring brake is built for air disc systems with a 2.5-inch stroke. It's got heavy-duty nylon diaphragms, epoxy coating where it counts, and...09-05170107- SKU:
- 09-05170107
- Product Type:
- Frame & Chassis
- Make:
- Universal Items
- Material Options:
- Nylon
$531.99Qty in Cart: 0Price:$531.99Subtotal: -
4 Way Solenoid Air Valve
AFTERMARKET
$162.9912V 4 Way Solenoid Air ValveThis 4 way Solenoid valve is the ideal controller for pneumatic systems. This design offers 2 spool position to fill or dump the system. Designed to be easy to use;...09-02500134- SKU:
- 09-02500134
- Product Type:
- Cargo Control
- Diameter Options:
- 1/4 Inch
- Make:
- Universal Items
$162.99Qty in Cart: 0Price:$162.99Subtotal: -
Stainless Steel Double Connection Air Line Box
ROADWORKS
$492.99Air Line Box With Double Trailer Harness Connector Holes* High Quality Air Line Box* Stainless Steel* (2) Trailer Connector Holes* Mounting Brackets Included* Clamps To Frame Rail* Can Be Bolted To...09-05040165- SKU:
- 09-05040165
- Product Type:
- Frame & Chassis
- Material Options:
- Stainless Steel
- Location:
- Made In USA
- Make:
- Universal Items
$492.99Qty in Cart: 0Price:$492.99Subtotal: -
LED Bullet License Plate Fasteners - White LED / Clear Lens 2 Pack
UNITED PACIFIC
$13.10LED Lighted Bullet Style License Plate Tag BoltsLight up your license plate with these LED Bullet Fasteners. They feature a durable chrome finish, a bright white LED, and a simple single-wire design...09-0107003- SKU:
- 09-0107003
- Finish Options:
- Chrome-Plated
- Product Type:
- Bumpers
- Height Options:
- 1 Inch
- Style Options:
- LED
- Length Options:
- 5 Inch
- Color:
- White
- Width Options:
- 3 Inch
- Material Options:
- Steel
- Make:
- Universal Items
$13.10Qty in Cart: 0Price:$13.10Subtotal: -
Poly Front Motor Mount Bushing Replaces K066-229 For Peterbilt & Kenworth
AUTOMANN USA
$26.46Kenworth Front Motor Mount Bushing ReplacementKeep your engine steady under heavy loads with the Poly Front Motor Mount Bushing, engineered to replace K066-229. Built from durable polyurethane, it...02-07120016- SKU:
- 02-07120016
- Product Type:
- Engine Parts
- Color:
- Blue
- Material Options:
- Plastic/Poly
- Make:
- Kenworth
$26.46Qty in Cart: 0Price:$26.46Subtotal: -
Turn Signal Switch With Hight Low Selector Replaces 16-03827, Tl1090 For Peterbilt
AUTOMANN USA
$104.99Replacement Peterbilt Turn Signal SwitchKeep your Peterbilt safe on the road with this high-quality turn signal switch. Replacing 16-03827 and TL1090, it includes a push-button high-low headlight...01-162004- SKU:
- 01-162004
- Length Options:
- 42 Inch
- Make:
- Peterbilt
- Product Type:
- Lighting
- Ready To Ship:
- Yes
$104.99Qty in Cart: 0Price:$104.99Subtotal: -
Black Projector Headlamp Assembly, Passenger Side For Peterbilt 357, 378, 379
AFTERMARKET
$841.99Peterbilt LED Projector Headlight Assembly - Passenger SideThis performance-driven projector LED headlight assembly features a sleek black housing designed specifically for Peterbilt trucks. The unit...01-16060054- SKU:
- 01-16060054
- Product Type:
- Lighting
- Position:
- Passenger Side
- Color:
- Amber
- Style Options:
- Black Housing
- Make:
- Peterbilt
$841.99Qty in Cart: 0Price:$841.99Subtotal: -
Heater Control Valve Actuator MB020101S, 52402589 For Peterbilt 357, 378, 379, 384, 386, 387, 388, 389
AUTOMANN USA
$76.99Replacement Peterbilt HVAC Heater Water Shut-Off Valve Actuator* High Quality Heater Control Valve Actuator* 4 Pin* Sold Individually* Warranty On Heater Control Valve Actuators Against Defects In...01-150300040- SKU:
- 01-150300040
- Product Type:
- Interior
- Make:
- Peterbilt
$76.99Qty in Cart: 0Price:$76.99Subtotal: -
Wear Pad Assembly CQ70739B, 2312566, 23-12566 For Peterbilt
AFTERMARKET
$137.99Peterbilt Wear Pad Assembly ReplacementEnsure long-lasting suspension performance with this Wear Pad Assembly CQ70739B, a direct replacement for OEM numbers 2312566 and 23-12566. This complete kit...01-05100912- SKU:
- 01-05100912
- Product Type:
- Frame & Chassis
- Make:
- Peterbilt
$137.99Qty in Cart: 0Price:$137.99Subtotal: -
Single Connection Air Line Box With 1 -7 Way, 2 Air Lines, 2 Rnd 4 Inch Back-Up Lights, 6 Rnd 2 Inch Red/Clear LEDs
ROADWORKS
$695.99Air Line Box Single Connection With Light Holes* High Quality Air Line Box* Single Connection* 7 Way Wire* 2 Air Lines* (2) Round 4 Inch Back-Up Lights On Line Connector Face* (6) Round 2 Inch Lights...09-0504319- SKU:
- 09-0504319
- Product Type:
- Frame & Chassis
- Color:
- Red
- Light Options:
- With Lights
- Material Options:
- Stainless Steel
- Location:
- Made In USA
- Make:
- Universal Items
$695.99Qty in Cart: 0Price:$695.99Subtotal: -
22 Inch Chrome American Road Runner Mitered Corner Bumper With Tow & 9 Oval Light Holes For Peterbilt 357, 378, 379
VALLEY CHROME PLATING
$1,367.99Valley Chrome American Roadrunner Bumper W/ 45 Degree Mitered Corners, Tow, & 9 Oval Light Holes* High Quality Bumper* Made Of Chrome-Plated Steel* 22 Inch Height* Has Cutouts For: - Mounting Holes...HC0010105009- SKU:
- HC0010105009
- Light Options:
- Without Lights
- Size Options:
- 10 Gauge
- Location:
- Made In USA
- Style Options:
- American Eagle Mitered End
- Finish Options:
- Chrome-Plated
- Material Options:
- Steel
- Truck Class:
- Heavy Duty
- Product Type:
- Bumpers
- Height Options:
- 22 Inch
- Make:
- Peterbilt
$1,367.99Qty in Cart: 0Price:$1,367.99Subtotal: -
22 Inch Chrome American Road Runner Mitered Corner Bumper With Tow, 8 Oval & 2 Rnd 2 Inch Light Holes For Peterbilt 357, 378, 379
VALLEY CHROME PLATING
$1,420.99Valley Chrome American Roadrunner Bumper W/ 45 Degree Mitered Corners, Tow, 8 Oval & 2 - 2 Inch Light Holes* High Quality Bumper* Made Of Chrome-Plated Steel* 22 Inch Height* Has Cutouts For: -...HC0010105008R2- SKU:
- HC0010105008R2
- Location:
- Made In USA
- Style Options:
- American Eagle Mitered End
- Finish Options:
- Chrome-Plated
- Material Options:
- Steel
- Truck Class:
- Heavy Duty
- Height Options:
- 22 Inch
- Product Type:
- Bumpers
- Light Options:
- Without Lights
- Size Options:
- 10 Gauge
- Make:
- Peterbilt
$1,420.99Qty in Cart: 0Price:$1,420.99Subtotal:
