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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BESTfit 9 Inch Diameter Aluminized Type 1 Muffler With 4 Inch ID / ID
BESTFIT TRUCK PARTS
$206.99Stainless Steel 4 Inch ID End In - End Out Centered Muffler* High Quality Muffler* Aluminized* Dimensions: - 9 Inch Body Diameter - 44.5 Inch Body Length - 51 Inch Overall Length* Made In USA*...09-08020051- SKU:
- 09-08020051
- Product Type:
- Exhaust
- Length Options:
- 51 Inch
- Material Options:
- Aluminized Steel
- Diameter Options:
- 9 Inch
- Make:
- Universal Items
$206.99Qty in Cart: 0Price:$206.99Subtotal: -
BESTfit 18 Inch Stainless Steel Stainless Steel Heat Shield Grab Handle
BESTFIT TRUCK PARTS
$117.9918 inch Stainless Heat Shield Grab Handle - Bolt-On Safety BarNeed a solid grab handle for your rig? This 18-inch stainless handle bolts right to your heat shield and gets the job done. Built from...09-0808151- SKU:
- 09-0808151
- Product Type:
- Exhaust
- Material Options:
- Stainless Steel
- Length Options:
- 18 Inch
- Make:
- Universal Items
$117.99Qty in Cart: 0Price:$117.99Subtotal: -
BESTfit 4 Inch Aluminized Flexible Seal Exhaust Clamp - 3.75 Inch Wide
BESTFIT TRUCK PARTS
$13.01Flat Band Seal Clamp* High Quality Clamp* Aluminized* 3.375 Inch Wide* Flexible* Made In USA* Sold Individually* Warranty On Clamps Against Defects In Workmanship & Material From Date Of Purchase***...09-08000177- SKU:
- 09-08000177
- Product Type:
- Exhaust
- Material Options:
- Aluminized Steel
- Width Options:
- 3 1/8 Inch
- Make:
- Universal Items
- Ready To Ship:
- Yes
$13.01Qty in Cart: 0Price:$13.01Subtotal: -
BESTfit 8 X 120 Inch Galvanized Flex Hose Coils
BESTFIT TRUCK PARTS
$192.998 Inch Diameter Galvanized Flexible Pre-Cut Metal Hose Coils* High Quality Hose Coils* Galvanized* Dimensions: - 120 Inch Length - 8 Inch Diameter* Flexible* Pre-Cut Metal Hose Coils* Made In USA*...09-080481205- SKU:
- 09-080481205
- Product Type:
- Exhaust
- Finish Options:
- Galvanized
- Length Options:
- 120 Inch
- Diameter Options:
- 8 Inch
- Make:
- Universal Items
$192.99Qty in Cart: 0Price:$192.99Subtotal: -
BESTfit 4.5 To 4 Inch ID / OD Exhaust Pipe Reducer
BESTFIT TRUCK PARTS
$63.79Pipe Reducer 4 1/2 In ID Reduced to 4 in ID* High Quality Exhaust Pipe Reducer* Made Of Aluminized Steel* 4.5 Inch ID Reduced To 4 Inch OD* Made In USA* Sold Individually* Warranty On Exhaust Pipe...09-08010352- SKU:
- 09-08010352
- Product Type:
- Exhaust
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
$63.79Qty in Cart: 0Price:$63.79Subtotal: -
BESTfit 4 Inch Polished Stainless Band Exhaust Clamp - 1.25 Inch Wide
BESTFIT TRUCK PARTS
$14.99Polished Stainless Steel Band Clamp* High Quality Clamp* 430 Stainless Steel* Polished Finish* Dimensions: - 4 Inch Diameter - 1.25 Inch Wide Clamp* Made In USA* Sold Individually* Warranty On...09-08000023- SKU:
- 09-08000023
- Product Type:
- Exhaust
- Diameter Options:
- 4 Inch
- Finish Options:
- Polished
- Width Options:
- 1 1/4 Inch
- Material Options:
- Stainless Steel
- Make:
- Universal Items
$14.99Qty in Cart: 0Price:$14.99Subtotal: -
BESTfit 9 Inch Diameter Type 1 Muffler With 5 Inch ID / ID
BESTFIT TRUCK PARTS
$184.99Universal Economy Standard Style Muffler* High Quality Muffler* Dimensions: - 5 Inch Id/ID - 9 Inch Body Diameter - 44.5 Inch Body Length - 51 Inch Overall Length* Made In USA* Sold...09-08020052- SKU:
- 09-08020052
- Product Type:
- Exhaust
- Diameter Options:
- 5 Inch
- Length Options:
- 51 Inch
- Make:
- Universal Items
$184.99Qty in Cart: 0Price:$184.99Subtotal: -
BESTfit 4 To 2.5 Inch OD / ID Aluminized Exhaust Reducer Pipe
BESTFIT TRUCK PARTS
$31.00Heavy Duty OD to ID Reducer* High Quality Exhaust Pipe Reducer* Made Of Aluminized Steel* 4 Inch OD To 2.5 Inch ID* 8 Inch Height* Made In USA* Sold Individually* Warranty On Exhaust Pipe Reducers...09-08011711- SKU:
- 09-08011711
- Product Type:
- Exhaust
- Height Options:
- 8 Inch
- Material Options:
- Aluminized Steel
- Make:
- Universal Items
- Ready To Ship:
- Yes
$31.00Qty in Cart: 0Price:$31.00Subtotal: -
Red 4 Trumpet Stacked Train Horn
AFTERMARKET
$1,019.994 Trumpet Red Authentic Train Horn* High Quality Train Horn* Made Of Textured Cast Aluminum* Red Powder Coated* Four Heavy Duty Trumpets - 15.5 Inch Trumpet - 12.0 Inch Trumpet - 9.50 Inch Trumpet...09-051359- SKU:
- 09-051359
- Width Options:
- 24 Inch
- Height Options:
- 9 Inch
- Length Options:
- 15 1/2 Inch
- Color:
- Red
- Material Options:
- Aluminum
- Make:
- Universal Items
- Product Type:
- Frame & Chassis
$1,019.99Qty in Cart: 0Price:$1,019.99Subtotal: -
BESTfit 5 OD X 28 Inch Chrome 3 Bend Miter Top Exhaust Stack For Dump Truck
BESTFIT TRUCK PARTS
$418.993 Bend Dump Truck StackLooking for dump truck exhaust stacks? This BESTfit 5-inch chrome exhaust stack gives your truck that perfect custom look. It features a clean miter cut top with a smooth...09-08010303- SKU:
- 09-08010303
- Product Type:
- Exhaust
- Diameter Options:
- 5 Inch
- Finish Options:
- Chrome-Plated
- Style Options:
- Miter Cut
- Make:
- Universal Items
$418.99Qty in Cart: 0Price:$418.99Subtotal: -
8 5/8 Inch Medium Chrome Chicken Mud Flap Cutout - Left Facing
GRAND GENERAL
$9.08Stud Mount Chicken Left Facing Mud Flap Cut Out* High Quality Mud Flap Cutout* Chicken Cutout* Medium Facing Left Studs On Back* Sold Individually* Warranty On Mud Flap Cutouts Against Defects In...09-0507403- SKU:
- 09-0507403
- Product Type:
- Interior
- Make:
- Universal Items
$9.08Qty in Cart: 0Price:$9.08Subtotal: -
BESTfit 5 Inch ID/OD 90 Degree Stainless Steel Elbow Exhaust Pipe 15 X 15 Inch
BESTFIT TRUCK PARTS
$179.995 Inch ID / OD Diameter 90 Degree Elbow Pipe* High Quality Elbow Pipe* Stainless Steel* 5 In I.D/O.D Diameter* 90 Degree* Made In USA* Sold Individually* Warranty On Elbow Pipes Against Defects In...09-08011712- SKU:
- 09-08011712
- Product Type:
- Exhaust
- Degree Options:
- 90
- Diameter Options:
- 5 Inch
- Material Options:
- Stainless Steel
- Make:
- Universal Items
- Ready To Ship:
- Yes
$179.99Qty in Cart: 0Price:$179.99Subtotal: -
BESTfit 3 Inch Preformed Stainless Lap Joint Exhaust Clamp
BESTFIT TRUCK PARTS
$17.99Flexible Wide Band Exhaust Clamp - Joins ID & OD PipeThis 360-degree sealing wide-band lap-joint exhaust clamp connects pipes and mufflers securely for a leak free seal. Pre-assembled design...09-08000178- SKU:
- 09-08000178
- Product Type:
- Exhaust
- Material Options:
- Stainless Steel
- Width Options:
- 3 Inch
- Make:
- Universal Items
$17.99Qty in Cart: 0Price:$17.99Subtotal: -
2 X 24 Top Flap Accent Trim With Hardware And Angle Mount Brackets
ROADWORKS
$59.99Top Flap Accent Trim* High Quality Accent Trim* 2 Inch x 24 Inch* Top Flat Style* With Angle Mount Brackets* Hardware (Included)* Sold Individually* Warranty On Accent Trims Against Defects In...09-0507205- SKU:
- 09-0507205
- Width Options:
- 2 Inch
- Product Type:
- Mud Flaps
- Length Options:
- 24 Inch
- Make:
- Universal Items
- Ready To Ship:
- Yes
$59.99Qty in Cart: 0Price:$59.99Subtotal: -
BESTfit 3 Inch 304 SS Lap Joint Exhaust Band Clamp
BESTFIT TRUCK PARTS
$19.99Heavy Duty Exhaust Clamp for 3 Inch ID and OD Pipe ConnectionsThe 3 inch stainless steel exhaust band clamp makes connecting exhaust pipes simple and secure. Built from premium 304 stainless steel...09-08000117- SKU:
- 09-08000117
- Product Type:
- Exhaust
- Width Options:
- 3 Inch
- Material Options:
- Stainless Steel
- Make:
- Universal Items
$19.99Qty in Cart: 0Price:$19.99Subtotal: -
BESTfit 5 OD/ID X 15 Inch Aluminized Steel 45 Degree Exhaust Elbow
BESTFIT TRUCK PARTS
$64.81Replacement 45 Degree Exhaust Elbow* High Quality Elbow* Aluminized Steel* Dimensions: - 5 Inch ID/OD - 15 Inch Length - 6 Inch Centerline Radius* 45 Degree* Made In USA* Sold Individually*...09-08010340- SKU:
- 09-08010340
- Product Type:
- Exhaust
- Degree Options:
- 45
- Diameter Options:
- 5 Inch
- Material Options:
- Stainless Steel
- Length Options:
- 15 Inch
- Make:
- Universal Items
$64.81Qty in Cart: 0Price:$64.81Subtotal: -
BESTfit 5 Inch U-Bolt Saddle Clamp
BESTFIT TRUCK PARTS
$32.165 Inch Chrome Flat Bolt HD Welded Saddle Clamp* High Quality Saddle* Chrome-Plated * 5 Inch * Flat Bolt* Welded* Made In USA* Sold Individually* Warranty On Saddles Against Defects In Workmanship &...09-080000069- SKU:
- 09-080000069
- Product Type:
- Frame & Chassis
- Diameter Options:
- 5 Inch
- Finish Options:
- Chrome-Plated
- Material Options:
- Steel
- Make:
- Universal Items
- Ready To Ship:
- Yes
$32.16Qty in Cart: 0Price:$32.16Subtotal: -
BESTfit 8 Inch Chrome Flat Band Exhaust Clamp
BESTFIT TRUCK PARTS
$65.99Chrome Flat Band Clamp* High Quality Flat Band Clamp* Chrome-Plated * 8 Inch * Flat* Sold Individually* Warranty On Band Clamps Against Defects In Workmanship & Material From Date Of Purchase*** High...09-080045- SKU:
- 09-080045
- Product Type:
- Exhaust
- Finish Options:
- Chrome-Plated
- Style Options:
- Flat
- Diameter Options:
- 8 Inch
- Make:
- Universal Items
$65.99Qty in Cart: 0Price:$65.99Subtotal: -
Lift Arm Air Suspension Kit
TWELVE GAUGE
$50.00Replacement Lift Arm Air Suspension Kit* High Quality Air Suspension Kit* Sold Individually* Warranty On Air Suspension Kits Against Defects In Workmanship & Material From Date Of Purchase*** High...09-05100144- SKU:
- 09-05100144
- Product Type:
- Exterior
- Make:
- Universal Items
$50.00Qty in Cart: 0Price:$50.00Subtotal: -
2 X 20 Inch Chrome Mud Flap Top Plate
GRAND GENERAL
$12.86Chrome 2 x 20 Inch Mud Flap Top Plate* High Quality Mud Flap Top Plate* Chrome-Plated * 2 Inch X 20 Inch* Sold Individually* Warranty On Mud Flap Top Plates Against Defects In Workmanship & Material...09-05070118- SKU:
- 09-05070118
- Product Type:
- Mud Flaps
- Height Options:
- 20 Inch
- Finish Options:
- Chrome-Plated
- Length Options:
- 2 Inch
- Make:
- Universal Items
$12.86Qty in Cart: 0Price:$12.86Subtotal:
