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2003 P42 Step Van

2003 P42 Step Van

Shop for Original Workhorse Custom Chassis Replacement Parts from an Authorized Workhorse Parts Dealer here. If you do not see what you are looking for here, please use the Contact Form and we would be happy to assist you to get the part(s) you need. (Please provide your VIN# and a detailed description of what you are looking for.)

Genuine Workhorse Parts

This year applies if the 10th digit of the VIN is "3"


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12551384 - Engine Oil Dipstick (L31 - 5.7L)

Part# 12551384 Description: This is a Brand New Workhorse Engine Oil Dipstick ..

$130.21 $96.45

12551490  -  Pipe Asm - Exhaust Gas Recirculation Valve (EGR) (L31 - 5.7L) Discontinued Part

12551490 - Pipe Asm - Exhaust Gas Recirculation Valve (EGR) (L31 - 5.7L)

12551490  -  Pipe Asm - Exhaust Gas Recirculation Valve (EGR) (5.7L)   ..

$324.35 $240.26

12551505 - Shield - Spark Plug Wire

12551505  -  Shield - Spark Plug Wire  ..

$10.85 $8.04

12552096 - Exhaust Manifold Bolt (L31 - 5.7L)

12552096  -  Exhaust Manifold Bolt (5.7L) ..

$4.04 $5.97

12552329  -  EGR Fitting on Exhaust Manifold (L31 - 5.7L) Discontinued Part

12552329 - EGR Fitting on Exhaust Manifold (L31 - 5.7L)

12552329  -  EGR Fitting on Exhaust Manifold (L31)  ..

$44.12 $32.68

12554030 - Bracket Asm - Alternator & Power Steering Pump

12554030  -  Bracket Asm - Alternator & Power Steering Pump..

$252.13 $186.76

12554824  -  Flywheel Asm Special Order - Call

12554824 - Flywheel Asm

12554824  -  Flywheel Asm  ..

$420.80 $412.28

12555896 - Gasket - EGR Valve Opening Cover

12555896  -  Gasket - EGR Valve Opening Cover ..

$16.25 $12.04

12556031 - Gasket - Cylinder Head (L57 - 6.5L Diesel)

12556031  -  Gasket - Cylinder Head (L57 - 6.5L) ..

$112.59 $83.40

12556261 - Block Heater (L35/L31/L18)

12556261  -  Block Heater (L35/L31/L18) ..

$53.88 $27.31

12556263 - Sensor Asm - Engine Coolant Temperature Gauge (L31 - 5.7L for Gauge)

12556263  -  Sensor Asm - Engine Coolant Temperature Gauge (L31 - 5.7L for Gauge) ..

$138.11 $102.30

12557046  -  Sensor Asm - Crankshaft Position (L57 - 6.5L Diesel) Out of Stock

12557046 - Sensor Asm - Crankshaft Position (L57 - 6.5L Diesel)

12557046  -  Sensor Asm - Crankshaft Position (6.5L) ..

$190.04 $140.77

12557345  -  Crankshaft Pulley (L57 - 6.5L Diesel) Out of Stock

12557345 - Crankshaft Pulley (L57 - 6.5L Diesel)

12557345  -  Crankshaft Pulley (6.5L) ..

$474.08 $351.17

12557558  -  Oil Pan Asm Out of Stock

12557558 - Oil Pan Asm

12557558  -  Oil Pan Asm ..

$412.48 $305.54

12558840 - Cylinder Head Bolts (LR4/LQ4) (10 qty required)

CYLINDER HEAD BOLTS (LR4/LQ4) 1 of 3 (10 qty required)..

$8.53 $6.32

12559015 - Valve Asm - Evaporative Emissions Canister Vent Solenoid (L31/LR4/LQ4/L96)

12559015  -  Valve Asm - Evaporative Emissions Canister Vent Solenoid..

$64.35 $47.67

12559337 - Thermostat Asm - Engine Coolant (L57 - 6.5L)

12559337  -  Thermostat Asm - Engine Coolant (L57 - 6.5L) ..

$65.84 $48.77

12560179 - Block Heater (LQ4/LR4)

12560179  -  Block Heater (LQ4/LR4) ..

$82.88 $61.39

12560223 - Gasket - Fuel Pump Opening Cover (6.5L)

12560223  -  Gasket - Fuel Pump Opening Cover (6.5L) ..

$13.30 $9.85

12560745 - Cylinder Head Bolts (LR4/LQ4) (4 qty required)

CYLINDER HEAD BOLTS (LR4/LQ4) 2 of 3 (4 qty required)..

$7.70 $5.70

12561092 - Tensioner Asm - Drive Belt (6.5L Diesel)

12561092  -  Tensioner  Asm - Drive Belt (6.5L Diesel) ..

$171.69 $127.18

12561591 - Fuel Shutoff Solenoid Valve (L57 - 6.5L Diesel)

12561591  -  Fuel Shutoff Solenoid Valve (6.5L) ..

$602.30 $179.46

12562023  -  Tube Asm - Oil Level Indicator Extension (6.5L) Discontinued Part

12562023 - Tube Asm - Oil Level Indicator Extension (6.5L)

12562023  -  Tube Asm - Oil Level Indicator Extension (6.5L) ..

$42.82 $31.72

12562243 - Shield - Exhaust Manifold, LH (LR4 - 4.8L & LQ4 - 6.0L)

12562243  -  Shield - Exhaust Manifold, LH (LR4 - 4.8L & LQ4 - 6.0L) ..

$55.07 $40.79

12562571 - Engine Oil Pressure Sensor Out of Stock

12562571 - Engine Oil Pressure Sensor

Part# 12562571 - Engine Oil Pressure Sensor   Description: Brand New Workh..

$108.77 $80.57

12563531 - Flywheel Asm (Heavy Duty)

12563531  -  Flywheel Asm (Heavy Duty) ..

$619.76 $459.08

12563532 - Spacer - Flywheel

12563532  -  Spacer - Flywheel ..

$133.87 $99.16

12563902  -  Engine Oil Pan Asm (L57 - 6.5L Diesel) Out of Stock

12563902 - Engine Oil Pan Asm (L57 - 6.5L Diesel)

12563902  -  Engine Oil Pan Asm (6.5L) ..

$514.49 $381.10

12564564  -  Valve Cover Asm, LH (L57 - 6.5L Diesel) Out of Stock

12564564 - Valve Cover Asm, LH (L57 - 6.5L Diesel)

12564564  -  Valve Cover Asm, LH (6.5L) ..

$161.11 $119.34

12564759  -  Belt - Fan, Water Pump, Alternator, P/S Pump (L31 - 5.7L) Out of Stock

12564759 - Belt - Fan, Water Pump, Alternator, P/S Pump (L31 - 5.7L)

12564759  -  Belt - Fan, Water Pump, Alternator, P/S Pump (5.7L) ..

$90.30 $66.89

12564768 - Oil Pump Asm w/ Screen (L57 - 6.5L Diesel)

12564768  -  Oil Pump Asm w/ Screen (6.5L) ..

$354.21 $262.38

12568246  -  Outlet Asm - Water (6.5L) Discontinued Part

12568246 - Outlet Asm - Water (6.5L)

12568246  -  Outlet Asm - Water (6.5L) ..

$52.68 $39.02

12568791  -  Glow Plug Relay (Controller) Asm (L57 - 6.5L Diesel) Out of Stock

12568900 - Starter Heat Shield

Part# 12568900 Please Note:This heat shield fits the replacement 08000145 starter. If replacing t..

$35.00 $29.46

12570714 - Head Asm - Cylinder (L57 - 6.5L)

12570714  -  Head Asm - Cylinder (6.5L) ..

$1,559.80 $1,197.24

12575329  -  Cylinder Head Gasket (LR4) Out of Stock

12575329 - Cylinder Head Gasket (LR4)

12575329  -  Cylinder Head Gasket (LR4) ..

$68.76 $50.93

12576918  -  EGR Valve Asm (L35 4.3L & L31 5.7L) Out of Stock

12580296 - Tensioner Asm - Drive Belt

12580296  -  Tensioner Asm - Drive Belt ..

$99.09 $78.72

12580771 - Workhorse Belt Idler Pulley Out of Stock

12580771 - Workhorse Belt Idler Pulley

Part# 12580771 Applications: Workhorse Belt Idler Pulley ..

$59.94 $56.21

12580772 - Pulley Asm - Belt Idler (L31 - 5.7L)

12580772 - Pulley Asm - Belt Idler (5.7L) ..

$117.90 $87.33

12581282 - Valve Asm - Evap Emissions Purge Solenoid (L18/LR4/LQ4)

12581282  -  VALVE ASM - EVAP EMISSIONS PURGE SOLENOID  ..

$92.04 $72.55

12589227 - Cylinder Head Gasket (LQ4)

12589227  -  Cylinder Head Gasket (LQ4) ..

$87.49 $64.81

12589867  -  Sensor Asm - Knock (LR4 - 4.8L & LQ4 - 6.0L) Out of Stock
12603737 - Manifold Asm - Exhaust, LH  4.8L/6.0L (LQ4 6.0L, All 4.8L) Out of Stock

12603737 - Manifold Asm - Exhaust, LH 4.8L/6.0L (LQ4 6.0L, All 4.8L)

Part# 12603737 Description: Brand New Workhorse Left Hand Side Exhaust Manifold for 4.8..

$479.61 $316.66

12603739 -  Manifold Asm - Exhaust, RH 4.8L/6.0L (LQ4 6.0L, All 4.8L) Out of Stock

12603739 - Manifold Asm - Exhaust, RH 4.8L/6.0L (LQ4 6.0L, All 4.8L)

12603739  -  Manifold Asm - Exhaust, RH 4.8L/6.0L (LQ4 6.0L, LY2/L20/LR4 4.8L)Description:..

$429.85 $429.85