John Deere R4038 Parts & Accessories

Q: How do I find the right part for my R4038?

Search by John Deere part number or browse by category on this page. Every part shown is matched to the John Deere R4038 by its compatible-models data.

9,003 parts and accessories that fit the John Deere R4038 — Engine Auxiliaries. Genuine OEM and quality aftermarket, from an authorized John Deere dealer. Ship nationwide or pick up locally.

Shop R4038 parts by category

← All categories Engine Auxiliaries (269)

Alternator

Part #AKK20374

$1,008.22

John Deere

Bracket, Alternator Cable

Part #KK61881

$103.11

John Deere

Support, 9.0 L Engine Size 6 Atd

Part #AKK14984

$1,758.83

John Deere

Shaft, Fan Drive

Part #AKK28804

$565.19

John Deere

Pipe, Charge Air Supply (Hot)

Part #AN402895

$357.88

John Deere

Pipe, Charge Air Supply (Hot) 9L St

Part #AN406071

$177.61

John Deere

Converter Kit, DN456 485 MY14-MY17

Part #BKK10834

$3,286.80

John Deere

Bracket, Machined Fan Support

Part #N403642

$314.75

John Deere

Pipe, Charge Air Supply (Cold) 9L S

Part #N410968

$171.40

John Deere

Air Flow Tube, Aal Bundle Assy

Part #AKK25394

$115.54

John Deere

Fuel Tank Assy

Part #AKK31982

$2,205.08

John Deere

Pipe, Charge Air Supply (Cold) 9L S

Part #KK46025

$95.31

John Deere

Air Flow Tube, Aal Bundle Assy

Part #AKK25393

$116.22

John Deere

Tank, Rinse 120 Gal With Fittings

Part #AKK61028

$2,006.70

John Deere

Fuel Line, Engine to Cooler 6.8L

Part #AN404480

$110.84

John Deere

Exhaust Pipe, Flex Turbo Outlet

Part #AN406075

$1,085.21

John Deere

Pipe, Charge Air Supply (Hot) Front

Part #KK22871

$203.61

John Deere

Cap-End (Side Port) 100 Cc

Part #AKK10509

$3,151.84

John Deere

Air Muffler, Dryer Assy

Part #AKK11036

$322.63

John Deere

Pipe, Scavenged Air

Part #AKK13127

$163.46

John Deere

Exhaust Pipe, Scr Outlet FT4 Assy

Part #AN405988

$1,311.00

John Deere

Tank, Clean Water

Part #KK62302

$3,423.39

John Deere

Fuel Line, From ECU

Part #AKK10293

$160.85

John Deere

Exhaust Pipe, 9L Turbo Outlet

Part #AKK20247

$1,297.13

John Deere

Exhaust Pipe, Muffler Outlet With S

Part #AKK21085

$1,152.84

John Deere

Fuel Line, Engine to Cooler Denali

Part #AN404825

$97.64

John Deere

Exhaust Pipe, Muffler Inlet

Part #AN406074

$1,240.84

John Deere

Fuel Line, Engine to Cooler Denali

Part #AN406416

$71.33

John Deere

Heat Shield, Atd Bottom

Part #KK17138

$63.71

John Deere

Pipe, Air Intake, Stack

Part #KK24151

$281.43

John Deere

Fuel Line, Return FT4

Part #N410848

$120.61

John Deere

Exhaust Pipe, Turbo Outlet, FT4 9.0

Part #RE334408

$645.94

John Deere

Air Flow Tube, Aal Bundle Assy

Part #AKK11255

$66.84

John Deere

Support, Air Intake

Part #AKK32246

$905.19

John Deere

Fuel Line, Return FT4

Part #KK21052

$130.64

John Deere

Air Duct, Snorkel

Part #KK32174

$434.34

John Deere

Heat Shield, Air Intake

Part #KK33207

$276.68

John Deere

Radiator Assy

Part #AN402264

$3,996.63

John Deere

Aftercooler, Cac Assy

Part #AN402265

$3,628.81

John Deere

Oil Cooler, Hydraulic Assy

Part #AN402266

$3,443.33

John Deere

Pipe, Air Intake 6.8L/9.0L W/ Fitti

Part #AN405043

$427.10

John Deere

Bracket, Hydraulic and Fuel Bundle

Part #KK26763

$56.62

John Deere

Bracket, Jumper, Fan Drive Harness

Part #KK33980

$33.28

John Deere

Bracket, DEF Tank Support

Part #N404463

$208.53

John Deere

Converter, FT4 Size 6 Ei/Ao Scr

Part #RE554384

$10,845.02

John Deere

Alternator, 240 Amp 12V

Part #AKK18421

$1,537.00

John Deere

Shaft, Fan Drive

Part #AKK28803

$489.09

John Deere

Air Flow Tube, Aal Bundle Assy

Part #AKK31840

$131.15

John Deere

DEF Tank Header Assembly, GEN3

Part #DZ118294

$1,671.37

John Deere

Support, Scr

Part #KK40861

$948.75

John Deere

Bracket, Hydraulic and Fuel Bundle

Part #KK50383

$75.29

John Deere

Diesel Oxidation Catalyst

Part #RE563870

$5,846.24

John Deere

Tube, FT4, Decomposition

Part #AKK12329

$3,050.85

John Deere

Bracket, DEF Yoke

Part #KK22235

$326.64

John Deere

Tank, DEF

Part #N404478

$890.92

John Deere

Bracket, Upper Cooler Support

Part #N407503

$141.66

John Deere

Bracket, Engine Bundle Rear

Part #N412183

$109.13

John Deere

Heat Shield, Atd Outlet

Part #RE333428

$371.55

John Deere

Line, DEF Heater Return Denali

Part #AKK14485

$156.00

John Deere

Exhaust Pipe, Scr Outlet FT4 Assy W

Part #AKK21038

$1,422.58

John Deere

Shop all 269 R4038 parts →

John Deere R4038 parts — frequently asked

How many parts fit the John Deere R4038?

Koenig Marketplace lists 9,003 parts and accessories that fit the John Deere R4038, including engine auxiliaries.

Are these genuine John Deere parts for the R4038?

Yes — Koenig is an authorized John Deere dealer, so you'll find genuine OEM John Deere parts alongside quality aftermarket options that fit the John Deere R4038.

How do I find the right part for my R4038?

Search by John Deere part number or browse by category above. Every part shown is matched to the John Deere R4038 by its compatible-models data.

Can I get R4038 parts shipped or pick them up locally?

Both. Koenig ships John Deere R4038 parts nationwide, and you can also pick up at one of Koenig's stores.

Parts for other John Deere models

John Deere S690 John Deere 8400 John Deere 8200 John Deere 9600 John Deere T670 John Deere W650 John Deere T660 John Deere 6130M John Deere T560 John Deere W660 John Deere 6140M John Deere 8300