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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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  • On Sale
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    CSM Stainless Steel Tool Box Permit Plate W/ Length Options For Peterbilt 359, 378, 379, 388 & 389

    CSM Stainless Steel Tool Box Permit Plate W/ Length Options For Peterbilt 359, 378, 379, 388 & 389

    CHROME SHOP MAFIA

    $54.68 - $75.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 359 1967 thru 1986* Fits Peterbilt 378 1988 thru 2007* Fits Peterbilt 379 1987 thru 2007* Fits Peterbilt 388 2008 thru 2014* Fits Peterbilt...
    PPR_301387
    SKU:
    PPR_301387
    Length Options:
    24 Inch
    Truck Class:
    Heavy Duty
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Product Type:
    Toolboxes
    Make:
    Peterbilt
    Ready To Ship:
    Yes
    $54.68 - $75.99
    Qty in Cart: 0
    Price:
    $54.68 - $75.99
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  • Bawer Adjustable Cradle Style Tool Box W/ Material Options

    Bawer Adjustable Cradle Style Tool Box W/ Material Options

    BAWER TOOL BOXES

    $298.99 - $541.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksBawer Black Steel Adjustable Cradle Style Tool Box BracketsBlack Steel Adustable Cradle Style Mounting...
    PPR_301386
    SKU:
    PPR_301386
    Material Options:
    Steel
    Finish Options:
    Black Powder Coat
    Height Options:
    29 Inch
    Position:
    Kit Full
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Length Options:
    64 Inch
    Product Type:
    Toolboxes
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $298.99 - $541.99
    Qty in Cart: 0
    Price:
    $298.99 - $541.99
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  • Iowa Customs 96 Inch Stainless Steel Light Bar W/ Light Hole Options

    Iowa Customs 96 Inch Stainless Steel Light Bar W/ Light Hole Options

    IOWA CUSTOMS

    $1,091.99 - $1,138.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks & TrailersIowa Customs 96 Inch 304 Stainless Steel Light Bar W/ 13 Round 4 Inch Light Holes96 Inch 304...
    PPR_301385
    SKU:
    PPR_301385
    Length Options:
    8 1/2 Inch
    Light Options:
    Without Lights
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Position:
    Rear
    Product Type:
    Bumpers
    Truck Class:
    Heavy Duty
    Width Options:
    96 Inch
    Finish Options:
    Polished
    Make:
    Universal Items
    $1,091.99 - $1,138.99
    Qty in Cart: 0
    Price:
    $1,091.99 - $1,138.99
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  • TPHD Stainless Steel 24 Inch Quarter Fender W/ Triangle Arm Mount Design & 4 Inch Top Flap

    TPHD Stainless Steel 24 Inch Quarter Fender W/ Triangle Arm Mount Design & 4 Inch Top Flap

    TPHD

    $269.99
    24 Inch Quarter Fender Stainless Steel W/ Triangle Arm Mount Design & 4 Inch Top Flap* High Quality Quarter Fender* Made Of 18 Gauge 430 Stainless Steel* Mirror Shine Finish* Includes:  - (2) Quarter...
    09-110306066
    SKU:
    09-110306066
    Material Options:
    Stainless Steel
    Finish Options:
    Polished
    Type Options:
    Post Mount
    Location:
    Made In USA
    Position:
    Kit Full
    Style Options:
    Quarter Fender
    Height Options:
    24 Inch
    Width Options:
    24 Inch
    Product Type:
    Rear Fenders
    Make:
    Universal Items
    Ready To Ship:
    Yes
    $269.99
    Qty in Cart: 0
    Price:
    $269.99
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  • 1157 & 570 Amber LED Front Side Turn Signal & Marker Light Super Bright

    1157 & 570 Amber LED Front Side Turn Signal & Marker Light Super Bright

    ROCKWOOD

    $46.99
    1157 & 570 Amber LED Super Bright Marker Light* High Quality LED Bulb* 1157 And 570 Style* Front Side Turn Signal/Marker* Super Bright Amber LEDs* Sold Individually* Warranty On LED Bulbs Against...
    UE7102
    SKU:
    UE7102
    Product Type:
    Lighting
    Location:
    Made In USA
    Color:
    Amber
    Make:
    Universal Items
    $46.99
    Qty in Cart: 0
    Price:
    $46.99
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  • 1157 Amber LED Marker/Flasher Bulb W/ 2 Stage Super Bright

    1157 Amber LED Marker/Flasher Bulb W/ 2 Stage Super Bright

    ROCKWOOD

    $18.17
    1157 Amber LED Marker/Flasher Bulb W/ 20 Diodes* High Quality LED Bulb* 1157 Style* 20 Diode* Marker/Flasher* 2 Stage Super Bright* Amber LEDs* Sold Individually* Warranty On LED Bulbs Against...
    UE7100
    SKU:
    UE7100
    Product Type:
    Lighting
    Color:
    Amber
    Location:
    Made In USA
    Make:
    Universal Items
    $18.17
    Qty in Cart: 0
    Price:
    $18.17
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  • 570 Magnum Ultra Bright LED Bulb W/ Color Options

    570 Magnum Ultra Bright LED Bulb W/ Color Options

    ROCKWOOD

    $21.20
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of Trucks570 Amber Magnum Ultra Bright LED Bulb570 Amber LED Bulb Magnum Ultra Bright* High Quality LED Bulb*...
    PPR_301382
    SKU:
    PPR_301382
    Product Type:
    Lighting
    Location:
    Made In USA
    Make:
    Universal Items
    Color:
    White
    Color:
    Red
    Color:
    Blue
    Color:
    Amber
    $21.20
    Qty in Cart: 0
    Price:
    $21.20
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  • Rockwood Stainless Steel Door Pocket W/ Pocket Length & LED Options For Peterbilt 359 & 370 Series

    Rockwood Stainless Steel Door Pocket W/ Pocket Length & LED Options For Peterbilt 359 & 370 Series

    ROCKWOOD

    $504.99 - $798.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 357 1986 thru 2005* Fits Peterbilt 359 1967 thru 1986* Fits Peterbilt 375 1987 thru 1996* Fits Peterbilt 377 1986 thru 2000* Fits Peterbilt...
    PPR_301381
    SKU:
    PPR_301381
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Product Type:
    Interior
    Light Options:
    With Lights
    Make:
    Peterbilt
    $504.99 - $798.99
    Qty in Cart: 0
    Price:
    $504.99 - $798.99
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  • Roadworks Stainless Steel Tapered Bumper W/ Height, Style & Recessed License Plate Options For Peterbilt, Kenworth, Freightliner, International & Western Star

    Roadworks Stainless Steel Tapered Bumper W/ Height, Style & Recessed License Plate Options For Peterbilt, Kenworth, Freightliner, International & Western Star

    ROADWORKS

    $1,321.99 - $1,632.99
    Choose Option(s) to see description.Fitment* Fits Freightliner Classic 120 1990 thru 2003* Fits Freightliner Classic XL 132 1990 thru 2003* Fits International 9900 I 2000 thru 2018* Fits...
    PPR_301377
    SKU:
    PPR_301377
    Product Type:
    Bumpers
    Location:
    Made In USA
    Material Options:
    Stainless Steel
    Make:
    International
    Make:
    Kenworth
    Make:
    Freightliner
    Make:
    Peterbilt
    Make:
    Western Star
    Finish Options:
    Polished
    Style Options:
    Tapered Boxed End
    Height Options:
    22 Inch
    Type Options:
    Blind Mount
    Height Options:
    20 Inch
    Style Options:
    Tapered Switchback End
    Height Options:
    18 Inch
    Style Options:
    Tapered Mitered End
    $1,321.99 - $1,632.99
    Qty in Cart: 0
    Price:
    $1,321.99 - $1,632.99
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  • Blind Mount Fender Bracket Kit Driver/Passenger Side W/ Bolt Kit For Peterbilt Flex Air & Kenworth AG380 Paccar Suspension

    Blind Mount Fender Bracket Kit Driver/Passenger Side W/ Bolt Kit For Peterbilt Flex Air & Kenworth AG380 Paccar Suspension

    AFTERMARKET

    $2,573.99
    Driver/Passenger Side Blind Mount Fender Bracket Kit W/ Bolt Kit* High Quality Fender Bracket Kit* Flex Air Suspension* Fits 24.5 Inch Low Pro Tires and Smaller* Includes:  - (1) Standard Driver Side...
    XBM-FLEXSFKIT
    SKU:
    XBM-FLEXSFKIT
    Type Options:
    Blind Mount
    Product Type:
    Rear Fenders
    Location:
    Made In USA
    Position:
    Kit Full
    Make:
    Kenworth
    Ready To Ship:
    Yes
    $2,573.99
    Qty in Cart: 0
    Price:
    $2,573.99
    Subtotal:
  • Spotlight Installation Kit W/ Driver/Passenger Side Post Mounting Kit For Unity Spotlight With An A-Shaft Length

    Spotlight Installation Kit W/ Driver/Passenger Side Post Mounting Kit For Unity Spotlight With An A-Shaft Length

    UNITY MFG

    $86.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksSpotlight Installation Kit W/ Driver Side Post Mount Mounting Kit For Unity Spotlight With An A-Shaft...
    PPR_301365
    SKU:
    PPR_301365
    Position:
    Kit Full
    Location:
    Made In USA
    Product Type:
    Lighting
    Make:
    Universal Items
    Position:
    Driver Side
    Type Options:
    Post Mount
    Position:
    Passenger Side
    $86.99
    Qty in Cart: 0
    Price:
    $86.99
    Subtotal:
  • Aluminum Window Regulator Crank Handle W/ Flange & Chrome Mounting Screw For Peterbilt 1998 & Newer

    Aluminum Window Regulator Crank Handle W/ Flange & Chrome Mounting Screw For Peterbilt 1998 & Newer

    ROCKWOOD

    $95.99
    Window Regulator Crank Handle Aluminum W/ Flange & Chrome Mounting Screw Fits D Shaft* High Quality Window Regulator Crank Handle* Made Of Billet Aluminum* Chrome Plated Finish* Fits D Shaft*...
    UDA318
    SKU:
    UDA318
    Product Type:
    Interior
    Material Options:
    Billet Aluminum
    Location:
    Made In USA
    Finish Options:
    Chrome-Plated
    Make:
    Peterbilt
    $95.99
    Qty in Cart: 0
    Price:
    $95.99
    Subtotal:
  • Roadworks 304 Stainless Steel Breather Screen Factory Height W/ Cutout Options For Peterbilt W/ 15 Inch Premium Donaldson

    Roadworks 304 Stainless Steel Breather Screen Factory Height W/ Cutout Options For Peterbilt W/ 15 Inch Premium Donaldson

    ROADWORKS

    $567.99 - $569.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 330 1995 thru 2005* Fits Peterbilt 335 2005 thru 2010* Fits Peterbilt 337 2011 thru 2023* Fits Peterbilt 352 1972 thru 1980* Fits Peterbilt...
    PPR_301362
    SKU:
    PPR_301362
    Finish Options:
    Polished
    Style Options:
    Donaldson Style
    Diameter Options:
    15 Inch
    Location:
    Made In USA
    Product Type:
    Exterior
    Truck Class:
    Heavy Duty
    Material Options:
    Stainless Steel
    Make:
    Peterbilt
    Make:
    Kenworth
    $567.99 - $569.99
    Qty in Cart: 0
    Price:
    $567.99 - $569.99
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  • On Sale
    Limited Quantity Available
    Roadworks 430 Stainless Steel Breather Screen Chopped W/ Cutout Options For Peterbilt W/ 15 Inch Premium Donaldson

    Roadworks 430 Stainless Steel Breather Screen Chopped W/ Cutout Options For Peterbilt W/ 15 Inch Premium Donaldson

    ROADWORKS

    $235.61 - $451.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 330 1995 thru 2005* Fits Peterbilt 335 2005 thru 2010* Fits Peterbilt 337 2011 thru 2023* Fits Peterbilt 352 1972 thru 1980* Fits Peterbilt...
    PPR_301361
    SKU:
    PPR_301361
    Shape Options:
    Oval
    Height Options:
    15 Inch
    Product Type:
    Exterior
    Location:
    Made In USA
    Finish Options:
    Polished
    Style Options:
    Donaldson Style
    Diameter Options:
    15 Inch
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Make:
    Peterbilt
    Make:
    Kenworth
    Make:
    Universal Items
    Ready To Ship:
    Yes
    Style Options:
    Punched
    $235.61 - $451.99
    Qty in Cart: 0
    Price:
    $235.61 - $451.99
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  • Rockwood Stainless Steel Door Pockets W/ Genuine African Rosewood Trim & Length/LED Color Options For Peterbilt 359 & 370 Series

    Rockwood Stainless Steel Door Pockets W/ Genuine African Rosewood Trim & Length/LED Color Options For Peterbilt 359 & 370 Series

    ROCKWOOD

    $565.99 - $904.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 357 1986 thru 2005* Fits Peterbilt 359 1967 thru 1986* Fits Peterbilt 375 1987 thru 1996* Fits Peterbilt 377 1986 thru 2000* Fits Peterbilt...
    PPR_301380
    SKU:
    PPR_301380
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Product Type:
    Interior
    Light Options:
    With Lights
    Make:
    Peterbilt
    $565.99 - $904.99
    Qty in Cart: 0
    Price:
    $565.99 - $904.99
    Subtotal:
  • Limited Quantity Available
    Roadworks 430 Stainless Steel Air Cleaner Punched Screens Chopped W/ Hole Shape Options For Peterbilt W/ 15 Inch Standard Donaldson

    Roadworks 430 Stainless Steel Air Cleaner Punched Screens Chopped W/ Hole Shape Options For Peterbilt W/ 15 Inch Standard Donaldson

    ROADWORKS

    $382.99
    Choose Option(s) to see description.Fitment* Fits Peterbilt 330 1995 thru 2005* Fits Peterbilt 335 2005 thru 2010* Fits Peterbilt 337 2011 thru 2023* Fits Peterbilt 352 1972 thru 1980* Fits Peterbilt...
    PPR_301358
    SKU:
    PPR_301358
    Location:
    Made In USA
    Style Options:
    Donaldson Style
    Height Options:
    15 Inch
    Shape Options:
    Oval
    Material Options:
    Stainless Steel
    Truck Class:
    Heavy Duty
    Finish Options:
    Polished
    Product Type:
    Exterior
    Make:
    Peterbilt
    Make:
    Kenworth
    Make:
    Universal Items
    Make:
    Western Star
    Ready To Ship:
    Yes
    $382.99
    Qty in Cart: 0
    Price:
    $382.99
    Subtotal:
  • Roadworks Stainless Steel Rear Light Bar W/ Light Hole Options

    Roadworks Stainless Steel Rear Light Bar W/ Light Hole Options

    ROADWORKS

    $565.99 - $605.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksRoadworks Stainless Steel Rear Light Bar W/ 10 Horizontal Oval Light HolesStainless Steel Rear Light...
    PPR_301357
    SKU:
    PPR_301357
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Product Type:
    Bumpers
    Light Options:
    Without Lights
    Make:
    Universal Items
    $565.99 - $605.99
    Qty in Cart: 0
    Price:
    $565.99 - $605.99
    Subtotal:
  • Steering Creations Smart Gen 5 Kit W/ 3 Bolt Pattern & Color Options For 4 Spoke Steering Wheel

    Steering Creations Smart Gen 5 Kit W/ 3 Bolt Pattern & Color Options For 4 Spoke Steering Wheel

    STEERING CREATIONS

    $345.99 - $349.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksSteering Creations Smart Gen 5 Kit White W/ 3 Bolt Pattern For 4 Spoke Steering WheelWhite Smart Gen 5...
    PPR_301376
    SKU:
    PPR_301376
    Product Type:
    Interior
    Position:
    Kit Full
    Color:
    Red
    Material Options:
    Steel
    Make:
    Peterbilt
    Make:
    Kenworth
    Make:
    Universal Items
    Color:
    White
    Color:
    Blue
    $345.99 - $349.99
    Qty in Cart: 0
    Price:
    $345.99 - $349.99
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  • Roadworks Stainless Steel Channel W/ Length & Super 21 Light Hole Options

    Roadworks Stainless Steel Channel W/ Length & Super 21 Light Hole Options

    ROADWORKS

    $20.76 - $174.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksRoadworks 9 Inch Stainless Steel Channel W/ 1 Super 21 Light Hole9 Inch Stainless Steel Channel W/ 1...
    PPR_301354
    SKU:
    PPR_301354
    Length Options:
    86 Inch
    Length Options:
    18 Inch
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Length Options:
    9 Inch
    Product Type:
    Lighting
    Height Options:
    4 Inch
    Light Options:
    Without Lights
    Make:
    Universal Items
    $20.76 - $174.99
    Qty in Cart: 0
    Price:
    $20.76 - $174.99
    Subtotal:
  • Roadworks Stainless Steel Channel W/ Length & Oval Light Hole Options

    Roadworks Stainless Steel Channel W/ Length & Oval Light Hole Options

    ROADWORKS

    $20.76 - $190.99
    Choose Option(s) to see description.Fitment** Universal - Fits Multiple Makes & Models Of TrucksRoadworks 9 Inch Stainless Steel Channel W/ 1 Oval Light Hole9 Inch Stainless Steel Channel W/ 1 Oval...
    PPR_301353
    SKU:
    PPR_301353
    Length Options:
    30 Inch
    Length Options:
    18 Inch
    Length Options:
    9 Inch
    Length Options:
    86 Inch
    Material Options:
    Stainless Steel
    Location:
    Made In USA
    Length Options:
    36 Inch
    Length Options:
    94 Inch
    Height Options:
    4 Inch
    Product Type:
    Lighting
    Length Options:
    60 Inch
    Light Options:
    Without Lights
    Make:
    Universal Items
    $20.76 - $190.99
    Qty in Cart: 0
    Price:
    $20.76 - $190.99
    Subtotal:
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Adding your products to cart

Shop for Repair & Performance Parts for the Peterbilt 379

We stock aftermarket parts from top-tier brands, each engineered to meet or exceed classic OEM Peterbilt 379 parts for both newer and older 379 model years. Replacement parts reduce downtime and can enhance the efficiency of your big rig. Easily swap out worn-out or broken mechanical components: - Turbochargers and exhaust manifolds. - Radiators, heater hoses, and electrical components. -Peterbilt 379 front shocks, air-ride suspension hardware and drivetrain or powertrain replacements. Installing high-quality aftermarket performance upgrades can lead to a positive ROI and stronger performance. Whether your Peterbilt needs an exhaust system upgrade or an extensive suspension rebuild, we've got the parts to get the job done.

Add Polished Chrome Upgrades

Elevate your truck's look with exterior chrome parts: stainless steel visors, grilles, rear fenders, and front bumpers for Peterbilt 379. Add larger Peterbilt diesel fuel storage tanks and a new set of Peterbilt 379 chrome stack tops.

Customize the Interior with Peterbilt 379 Accessories

Our Peterbilt 379 interior accessories let you mix and match designs to fit your truck's theme. For decades, we've helped source parts for drivers to build their custom show trucks. Customizing the interior? If you can dream it, there's likely a product to help you build it. Browse through dash trims, upholstery, dual-tone interior cab lights, vent trim covers, custom foot pedals, and more. Interior accessories help to customize the entirety of your rig. You can add unique rear sleeper window shapes, chrome-polished mirror accessories, cabin doors, and in-cab vinyl flooring kits. When it comes to fine-tuning your custom interior, there are endless options. Filter through a vast selection of products via the materials, design features, sizes, and aftermarket brands that truckers trust. At the bottom of the page, you can review the item details, check for product specs, search for limited-time discounts on popular items, and add the order to cart. Easy.

Frequently Asked Questions About Peterbilt 379 Parts

What years are Peterbilt 379 parts compatible with, and will they fit my specific model?

Most Peterbilt 379 parts fit 1987–2007 trucks, but fitment depends on the exact part and your setup (standard vs extended hood, trim packages, modifications). Always confirm OEM specs and model details before ordering. For custom builds, contact support with your truck info.

What's the difference between aftermarket and OEM Peterbilt 379 parts in terms of quality and durability?

OEM parts match factory specs and usually cost more. Quality aftermarket parts can perform similarly for 30–50% less, especially for chrome and accessories. Look for strong materials (ex: 16-gauge+ bumpers), good plating/finishing, and a warranty—avoid ultra-cheap parts that rust or peel quickly.

How difficult is it to install Peterbilt 379 bumpers and what tools do I need?

Most installs take 2–4 hours with basic tools: socket set (especially 3/4" and 7/8"), torque wrench, jack stands/lift, and ideally a helper. Many bumpers use factory mounts; some may need minor drilling. Rusted hardware and alignment are the usual challenges. Pro install is often $200–$400.

What chrome and finish options are available for Peterbilt 379 parts, and how do they hold up?

Triple chrome: best shine, needs regular upkeep (especially in winter). Powder coat: tough and chip-resistant, less mirror-like. Polished stainless: higher upfront cost, won’t rust, low maintenance. Choose based on climate and how much maintenance you want to do.

Which Peterbilt 379 parts should I prioritize replacing for both appearance and functionality?

Start with safety items (headlights/marker lights). Next, replace rust-prone parts like bumpers, battery boxes, and step plates. Then move to high-impact upgrades like air cleaners and exhaust. Interior items (dash panels, handles) improve daily comfort. Prices can vary. Budget $2,000-5,000 for a comprehensive exterior refresh, or tackle projects individually starting with the most visible or damaged components.


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