DEF Hoses,Tubing & Piping

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Hose Assembly - HTD DEF RET/SUP (4 X 2750MM) M50-6039-3232750 - Paccar
positive OEM
Part# M50-6039-3232750
Part# M50-6039-3232750
shipping
$419.74
In Stock
Fitting - Elbow, Diesel Exhaust Fluid Line, 90 Degree, Hose Barb 03-38068-000 - Freightliner
positive OEM
Part# 03-38068-000
Part# 03-38068-000
shipping
Special Price $12.57 Regular Price $16.38
In Stock
Hose Assembly - HTD DEF PRES (6 x 2400MM) M50-6031-71132400 - Paccar
positive OEM
Part# M50-6031-71132400
Part# M50-6031-71132400
shipping
Special Price $369.02 Regular Price $384.90
In Stock
Quick Connect Silicone Hose Assembly w/ Tubing (3/8 In. x 500mm), Green M50-6012-861210500 - Dynacraft
positive OEM
Part# M50-6012-861210500
Part# M50-6012-861210500
shipping
$82.51
In Stock
DEF Hose Assembly with Convoluted Tubing (6mm x 2200mm) M50-6031-71132200 - Paccar
positive OEM
Part# M50-6031-71132200
Part# M50-6031-71132200
shipping
Special Price $317.65 Regular Price $365.00
In Stock
DEF Hose Assembly w/ Convoluted Tubing (6mm x 450mm) M50-6032-74320450 - Paccar
positive OEM
Part# M50-6032-74320450
Part# M50-6032-74320450
shipping
Special Price $183.21 Regular Price $190.80
In Stock
Quick Connect Silicone Hose Assembly w/ Tubing (5/8 In. x 150mm), Blue M50-6012-452110150 - Dynacraft
positive OEM
Part# M50-6012-452110150
Part# M50-6012-452110150
shipping
$63.75
In Stock
Hose Assembly - HTD DEF PRES 4 x 950mm M50-6038-5520950 - Paccar
positive OEM
Part# M50-6038-5520950
Part# M50-6038-5520950
shipping
Special Price $231.90 Regular Price $240.57
In Stock
DEF Coolant Tube 9mm Inner Diameter 4033647C1 - International
Part# 4033647C1
Part# 4033647C1
shipping Ships up to 72h
$109.59
Available
Diesel Exhaust Fluid Line - Supply, 2300 Mm, No-Heat 04-29289-230 - Freightliner
positive OEM
Part# 04-29289-230
Part# 04-29289-230
shipping Ships up to 72h
Special Price $294.56 Regular Price $318.21
Available
Hose Assembly - Heated DEF Return/Supply (4 X 1950MM) M50-6039-4411950 - Paccar
positive OEM
Part# M50-6039-4411950
Part# M50-6039-4411950
shipping Ships up to 72h
$340.11
Available
Hose Assembly - Heated DEF Return/Supply (4 X 350MM) M50-6039-3233500 - Paccar
positive OEM
Part# M50-6039-3233500
Part# M50-6039-3233500
shipping Ships up to 72h
$494.40
Available
Heated DEF Hose Assembly RET/SUP (4 X 5050MM) M50-6039-4415050 - Paccar
positive OEM
Part# M50-6039-4415050
Part# M50-6039-4415050
shipping Ships up to 72h
$648.69
Available
Heated DEF Hose Assembly RET/SUP (4 X 4700MM) M50-6039-3234700 - Dynacraft
Part# M50-6039-3234700
Part# M50-6039-3234700
shipping Ships up to 72h
$613.86
Available
Heated DEF Hose Assembly RET/SUP (4 X 3000MM) M50-6039-3233000 - Paccar
positive OEM
Part# M50-6039-3233000
Part# M50-6039-3233000
shipping Ships up to 72h
$444.63
Available
Heated DEF Hose Assembly RET/SUP (4 X 3300MM) M50-6039-4413300 - Paccar
positive OEM
Part# M50-6039-4413300
Part# M50-6039-4413300
shipping Ships up to 72h
$474.49
Available
Heated DEF Hose Assembly RET/SUP (4 X 3300MM) M50-6039-3233300 - Paccar
positive OEM
Part# M50-6039-3233300
Part# M50-6039-3233300
shipping Ships up to 72h
$474.49
Available
Heated DEF Hose Assembly RET/SUP (4 X 3350MM) M50-6039-4413350 - Paccar
positive OEM
Part# M50-6039-4413350
Part# M50-6039-4413350
shipping Ships up to 72h
$479.47
Available
Heated DEF Hose Assembly RET/SUP (4 X 3450MM) M50-6039-4413450 - Dynacraft
positive OEM
Part# M50-6039-4413450
Part# M50-6039-4413450
shipping Ships up to 72h
$489.43
Available
Heated DEF Hose Asswmbly - PRES (6 X 2200MM) M50-6031-72132200 - Paccar
Part# M50-6031-72132200
Part# M50-6031-72132200
shipping Ships up to 72h
$365.00
Available
Heated DEF Hose Assembly PRES (6 X 2900MM) M50-6031-71132900 - Paccar
Part# M50-6031-71132900
Part# M50-6031-71132900
shipping Ships up to 72h
$434.67
Available
Heated DEF Hose Assembly RET/SUP (4 X 2950MM) M50-6039-4412950 - Paccar
Part# M50-6039-4412950
Part# M50-6039-4412950
shipping Ships up to 72h
$439.66
Available
Hose Assembly HTD DEF RET/SUP 4 x 3950mm M50-6039-3233950 - Paccar
Part# M50-6039-3233950
Part# M50-6039-3233950
shipping Ships up to 72h
$539.20
Available
Hose Assembly - HTD DEF PRES (6x3000MM) M50-6031-71133000 - Paccar
positive OEM
Part# M50-6031-71133000
Part# M50-6031-71133000
shipping Ships up to 72h
$444.63
Available
Hose Assembly - HTD DEF PRES (6x2500MM) M50-6031-71132500 - Paccar
positive OEM
Part# M50-6031-71132500
Part# M50-6031-71132500
shipping Ships up to 72h
$394.86
Available
Hose Assembly - HTD DEF PRES (6x2100MM) M50-6031-71132100 - Paccar
positive OEM
Part# M50-6031-71132100
Part# M50-6031-71132100
shipping Ships up to 72h
$355.04
Available
Hose Assembly - HTD DEF PRES (6x2000MM) M50-6031-71132000 - Paccar
positive OEM
Part# M50-6031-71132000
Part# M50-6031-71132000
shipping Ships up to 72h
$345.09
Available
Hose Assembly - HTD DEF PRES (6x1900MM) M50-6031-71131900 - Paccar
positive OEM
Part# M50-6031-71131900
Part# M50-6031-71131900
shipping Ships up to 72h
$335.13
Available
Hose - Assembly - HTD DEF PRES (6x1100MM) M50-6031-71131100 - Paccar
positive OEM
Part# M50-6031-71131100
Part# M50-6031-71131100
shipping Ships up to 72h
$255.50
Available
Hose Assembly - Heated, DEF, Return/Supply M50-6039-3234500 - Paccar
positive OEM
Part# M50-6039-3234500
Part# M50-6039-3234500
shipping Ships up to 72h
$593.94
Available
Hose Assembly - Heated DEF Return/Supply M50-6039-4414450 - Paccar
positive OEM
Part# M50-6039-4414450
Part# M50-6039-4414450
shipping Ships up to 72h
$588.97
Available
Hose Assembly - HTD DEF RET/SUP (4 X 2950MM) M50-6039-3232950 - Paccar
positive OEM
Part# M50-6039-3232950
Part# M50-6039-3232950
shipping Ships up to 72h
$439.66
Available
Hose Assembly - HTD DEF (4 X 3000MM) M50-6039-4413000 - Paccar
positive OEM
Part# M50-6039-4413000
Part# M50-6039-4413000
shipping Ships up to 72h
$444.63
Available
Tube Asm 23527978 - Detroit Diesel
positive OEM
Part# 23527978
Part# 23527978
shipping Ships up to 72h
Special Price $95.10 Regular Price $105.76
Available
Hose Assembly - HTD DEF PRES (4 X 500MM) M50-6038-5620500 - Paccar
positive OEM
Part# M50-6038-5620500
Part# M50-6038-5620500
shipping Ships up to 72h
$195.77
Available
Hose Assembly - Heated DEF PRES (6x2500mm) M50-6031-72132500 - Paccar
positive OEM
Part# M50-6031-72132500
Part# M50-6031-72132500
shipping Ships up to 72h
$394.86
Available

1-36 of 64 Items

DEF Hose and Tubing Essentials That Keep Systems Flowing

Effective diesel exhaust fluid systems rely on secure and well-maintained connections between their core components. Hose, tubing, and piping elements within these systems serve a crucial role in transporting DEF fluid from storage to injection points, helping trucks meet emissions standards and operate cleanly. When these lines are worn, blocked, or damaged, performance issues and regulatory non-compliance can follow.

Withstanding Tough Trucking Environments with Resilient Lines

DEF lines operate in settings where movement, temperature shifts, and corrosive exposure are everyday challenges. That’s why the materials used must combine flexibility with resilience, allowing consistent fluid delivery without failure. Insulated construction and anti-crystallization properties help preserve functionality across all driving conditions.

Simplifying Repairs Through Well-Matched System Components

Because DEF systems vary between truck models, hoses and tubing must fit seamlessly within the vehicle’s layout. Quality piping solutions are designed to integrate smoothly with tanks, pumps, and injector assemblies while minimizing the need for custom modifications. Easy-to-route lines and compatible fittings reduce downtime during installation or replacement, supporting routine service and emergency repairs alike.

Helping Engines Run Clean While Meeting Regulations

A stable DEF system ensures proper emissions control and steady engine operation. When hoses and tubing maintain clean, consistent flow, the risk of system faults—like clogged injectors or sensor misreads—drops significantly. That reliability supports clean exhaust output and efficient fuel use mile after mile.

Big Rig World offers a selection of DEF hose, tubing, and piping solutions designed to support emissions systems in modern diesel trucks. Built for reliability and long-term use, these components help ensure smooth operation and keep your vehicle in line with emissions standards mile after mile.