TORSIONAL DAMPER
Part #: A-RE520465
John Deere R4038 Parts & Accessories
6,127 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
STARTER
Part #: A-RE529661
ALTERNATOR; 24V, 240 AMP
Part #: A-RE550906
ALTERNATOR
Part #: A-RE555751
FUEL LINE, FROM ECU
Part #: AKK10293
$156.16
CAP, CAP-END (SIDE PORT) 100 CC
Part #: AKK10509
$3317.72
AIR MUFFLER, DRYER ASSY
Part #: AKK11036
$313.22
AIR FLOW TUBE, AAL BUNDLE ASSY
Part #: AKK11255
$64.90
PIPE, CAC
Part #: AKK11691
$228.00
LINE, DEF HEATER RETURN JUMPER
Part #: AKK11797
$161.16
TUBE, FT4, DECOMPOSITION
Part #: AKK12329
$2961.98
PIPE, SCAVENGED AIR
Part #: AKK13127
$163.46
LINE, DEF HEATER RETURN DENALI
Part #: AKK14485
$151.46
SUPPORT, 9.0 L ENGINE SIZE 6 ATD
Part #: AKK14984
$1707.60
PIPE, CHARGE AIR SUPPLY (HOT) REAR
Part #: AKK15944
$701.75
ALTERNATOR, 240 AMP 12V
Part #: AKK18421
$1537.00
EXHAUST PIPE, 9L TURBO OUTLET
Part #: AKK20247
$1259.36
ALTERNATOR, 200 AMP
Part #: AKK20374
$984.85
EXHAUST PIPE, SCR OUTLET FT4 ASSY W
Part #: AKK21038
$1381.15
EXHAUST PIPE, MUFFLER OUTLET WITH S
Part #: AKK21085
$1119.25
RADIATOR, RADIATOR ASSY
Part #: AKK24069
$3310.85
AFTERCOOLER, CAC ASSY
Part #: AKK24070
$2154.88
FUEL COOLER, DENSO
Part #: AKK25363
$254.66
AIR FLOW TUBE, AAL BUNDLE ASSY
Part #: AKK25393
$112.84
AIR FLOW TUBE, AAL BUNDLE ASSY
Part #: AKK25394
$112.18
BRACKET, RAD SIDE CHANNEL
Part #: AKK27426
$577.49
BRACKET, RAD LH CHANNEL
Part #: AKK27427
$563.04
SHAFT, FAN DRIVE
Part #: AKK28803
$474.85
SHAFT, FAN DRIVE
Part #: AKK28804
$548.74
BRACKET, TENSIONER
Part #: AKK30587
$257.47
AIR FLOW TUBE, AAL BUNDLE ASSY
Part #: AKK31840
$127.33
FUEL TANK, FUEL TANK ASSY
Part #: AKK31982
$2450.08
SUPPORT, AIR INTAKE
Part #: AKK32246
$1005.77
VENTURI TEE, 1.5" FLANGE
Part #: AN206441
$35.56
CONVERTER, FOAM GENERATING
Part #: AN307096
$518.30
RADIATOR, RADIATOR ASSY
Part #: AN402264
$3899.15
AFTERCOOLER, CAC ASSY
Part #: AN402265
$3523.12
OIL COOLER, HYDRAULIC ASSY
Part #: AN402266
$3359.34
VISCOUS FAN DRIVE, VISCOUS FAN DRIV
Part #: AN402324
$1551.16
PIPE, CHARGE AIR SUPPLY (HOT)
Part #: AN402895
$347.46
EXHAUST PIPE, MUFFLER OUTLET
Part #: AN402943
$322.12
SUPPORT, FUEL TANK
Part #: AN403220
$1189.49
FUEL LINE, ENGINE TO COOLER 6.8L
Part #: AN404480
$107.61
FUEL LINE, ENGINE TO COOLER DENALI
Part #: AN404825
$94.79
PIPE, AIR INTAKE 6.8L/9.0L W/ FITTI
Part #: AN405043
$474.55
BRACKET, FUEL COOLERS
Part #: AN405189
$117.64
EXHAUST PIPE, SCR OUTLET FT4 ASSY
Part #: AN405988
$1272.82
PIPE, CHARGE AIR SUPPLY (HOT) 9L ST
Part #: AN406071
$208.96
MUFFLER, STAGE II EXHAUST
Part #: AN406073
$3189.01
EXHAUST PIPE, MUFFLER INLET
Part #: AN406074
$1204.70
EXHAUST PIPE, FLEX TURBO OUTLET
Part #: AN406075
$904.34
FUEL LINE, ENGINE TO COOLER DENALI
Part #: AN406416
$69.25
ISOLATOR, MOUNT, RESILIENT LORD #CB
Part #: AT169022
$92.83
FAN, FAN 27.5 IN
Part #: AT374670
$332.14
EXHAUST PIPE
Part #: DZ100507
$1422.03
DIESEL OXIDATION CATALYST
Part #: DZ100828
$4611.33
CONVERTER, SCR, SIZE 5 (EI/AO)
Part #: DZ101017
$12434.17
HEAT EXCHANGER, EGR 9L FT4 HW3
Part #: DZ102533
$2646.87
DEF TANK HEADER ASSEMBLY, 12V,
Part #: DZ113401
$2308.76
EXHAUST MANIFOLD, FRONT, FT4 HW3
Part #: DZ113749
$340.40
John Deere R4038 parts — frequently asked
How many parts fit the John Deere R4038?
Koenig Marketplace lists 6,127 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.
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