How do I confirm pilotpart270612 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Starter Motor 39MT 24V 3103916 For Cummins Engine MT855 30N Mack HD RS RW Series 2003-06

For Caterpillar Starter Motor

Starter Motor 323858 for Caterpillar Cummins QSX 15.0L Engine

Q: What part numbers are associated with this Starter Motor?

323858, 104-6853, 410-12312, SDR0472, D19011522, D19011523, D8200330, D8200699, D8200719, SDR0313, SDR0314, SDR0317

OEM / REF: 323858SKU: pilotpart270612

Starter Motor 39MT 24V 3103916 For Cummins Engine MT855 30N Mack HD RS RW Series 2003-06 is a Starter Motor replacement part indexed for CASE STX375 · Cummins QSX 15.0L · 2004-2007 and CASE STX500 · Cummins QSX 15.0L · 2004-2007, with 3 application records on file. Match OEM part number 323858 and confirm fitment fo...

Stock: In stock
Condition: New
Fitment: Caterpillar Engine Spare Parts
Category: Starter Motor

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Worldwide delivery options

In stock — ready to order

$559.99USD/EA

~~$79,599.00~~Save 99%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

Estimates from today; confirm exact lead time before payment.

Quantity

Confirm fitment before ordering →

Lead times can vary by freight route and customs. Contact support for expedited shipping.

Starter Motor Description

This Starter Motor is indexed for CASE STX375 · Cummins QSX 15.0L · 2004-2007; CASE STX500 · Cummins QSX 15.0L · 2004-2007; CASE STX500QT · Cummins QSX 15.0L · 2004-2007; CASE 40D · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986. Compare reference number 323858 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 104-6853, 410-12312, SDR0472. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

323858 104-6853 410-12312 SDR0472 D19011522 D19011523 D8200330 D8200699 D8200719 SDR0313 SDR0314 SDR0317

Applications

CASE STX375 · Cummins QSX 15.0L · 2004-2007
CASE STX500 · Cummins QSX 15.0L · 2004-2007
CASE STX500QT · Cummins QSX 15.0L · 2004-2007
CASE 40D · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986
CASE 40DR · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986
CASE 45R · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986
CASE 50D · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1985
CASE 50LC · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986
CASE 980 · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986
CASE 9040 · Cummins 6T-830 Dsl · 1993-1994
CASE 9040B · Cummins 6T-830 Dsl · 1994-2000
CASE 9045B · Cummins 6T-830 Dsl · 1998-2000
CASE Cruz-Air 45DR · Detroit Diesel; 4-71 -4.7 Liter CC, 284 CID L4 · 1979-1986
CAT 120M · C6.6 -6.6 Liter CC, 403 CID L6 · 2005-2009
CAT 12M · C6.6 -6.6 Liter CC, 403 CID L6 · 2006-2015
CAT 140H · 3176 -10.3 Liter CC, 629 CID L6 · 2001-2008
CAT 143H · 3176 -10.3 Liter CC, 629 CID L6 · 2001-2008
CAT 16G · 3406 -14.6 Liter CC, 855 CID L6 · 1973-1985
CAT 16H · 3406 -14.6 Liter CC, 855 CID L6 · 1996-1999
CAT 245 · 3406 -14.6 Liter CC, 855 CID L6 · 1972-1988
CAT 330C · C9 -8.8 Liter CC, 537 CID L6 · 2002-2012
CAT 330D · C9 -8.8 Liter CC, 537 CID L6 · 2006-2015
CAT 336D · C9 -8.8 Liter CC, 537 CID L6 · 2008-2015
CAT 345B · 3176C -10.3 Liter CC, 629 CID L6 · 1997-2005
CAT 375 · 3406 -14.6 Liter CC, 855 CID L6 · 1992-2002
CAT 621B · 3406 -14.6 Liter CC, 855 CID L6 · 1973-1986
CAT 621E · 3406 -14.6 Liter CC, 855 CID L6 · 1986-1993
CAT 621F · 3406 -14.6 Liter CC, 855 CID L6 · 1993-2000
CAT 621G · C15 -15.2 Liter CC, 928 CID L6 · 2000-2011
CAT 623B · 3406 -14.6 Liter CC, 855 CID L6 · 1973-1985
CAT 623E · 3406 -14.6 Liter CC, 855 CID L6 · 1986-1993
CAT 623F · 3406 -14.6 Liter CC, 855 CID L6 · 1993-2001
CAT 623G · C15 -15.2 Liter CC, 928 CID L6 · 2004-2011
CAT 623G · 3406 -14.6 Liter CC, 855 CID L6 · 2000-2005
CAT 725 · 3176C -10.3 Liter CC, 629 CID L6
CAT 735 · 3406 -14.6 Liter CC, 855 CID L6
CAT 735 · C15 -15.2 Liter CC, 928 CID L6
CAT 740 · C15 -15.2 Liter CC, 928 CID L6
CAT 776 · D-348 Diesel -29.3 Liter CC, 1786 CID V12 · 1970-1984
CAT 777 · D-348 Diesel -29.3 Liter CC, 1786 CID V12 · 1970-1984
CAT 824C · 3406 -14.6 Liter CC, 855 CID L6 · 1978-1985
CAT 824G · 3406 -14.6 Liter CC, 855 CID L6 · 1996-2003
CAT 825C · 3406 -14.6 Liter CC, 855 CID L6 · 1978-1996
CAT 825G · 3406 -14.6 Liter CC, 855 CID L6 · 1996-2002
CAT 825G Series II · 3406E -14.6 Liter CC, 855 CID L6 · 2003-2013
CAT 826C · 3406 -14.6 Liter CC, 855 CID L6 · 1978-1996
CAT 826G · 3406 -14.6 Liter CC, 855 CID L6 · 1996-2002
CAT 826G Series II · 3406E -14.6 Liter CC, 855 CID L6 · 2003-2013
CAT 980C · 3406 -14.6 Liter CC, 855 CID L6 · 1978-1985
CAT 980F · 3406 -14.6 Liter CC, 855 CID L6 · 1991-1996
CAT 980G · 3406 -14.6 Liter CC, 855 CID L6 · 1996-2003
CAT 980G II · 3406 -14.6 Liter CC, 855 CID L6 · 2000-2006
CAT 983B · 3406 -14.6 Liter CC, 855 CID L6 · 1978-1982
CAT 992C · 3408 -10.4 Liter CC, 636 CID 8 · 1977-1993
CAT 992C · 3408 -18.0 Liter CC, 1099 CID V8 · 1985-1988
CAT D350E · 3406 -14.6 Liter CC, 855 CID L6
CAT D350E Series II · 3406 -14.6 Liter CC, 855 CID L6
CAT D400D · 3406 -14.6 Liter CC, 855 CID L6
CAT D400E Series II · 3406 -14.6 Liter CC, 855 CID L6
CAT D40D · 3406 -14.6 Liter CC, 855 CID L6
CAT D6R LGP Series II · C9 -8.8 Liter CC, 537 CID L6 · 2001-2006
CAT D6R LGP Series III · C9 -8.8 Liter CC, 537 CID L6 · 2005-2012
CAT D6R Series · C9 -8.8 Liter CC, 537 CID L6 · 2001-2012
CAT D6R Series II · C9 -8.8 Liter CC, 537 CID L6 · 2001-2006
CAT D6R XL Series II · C9 -8.8 Liter CC, 537 CID L6 · 2001-2006
CAT D6R XL Series III · C9 -8.8 Liter CC, 537 CID L6 · 2005-2012
CAT D6R XW Series II · C9 -8.8 Liter CC, 537 CID L6 · 2001-2006
CAT D6R XW Series III · C9 -8.8 Liter CC, 537 CID L6 · 2005-2012
CAT D6T LGP · C9 -8.8 Liter CC, 537 CID L6 · 2006-2015
CAT D6T Series · C9 -8.8 Liter CC, 537 CID L6 · 2006-2015
CAT D6T XL · C9 -8.8 Liter CC, 537 CID L6 · 2006-2015
CAT D6T XW · C9 -8.8 Liter CC, 537 CID L6 · 2006-2015
CAT R1600 · 3176 -10.3 Liter CC, 629 CID L6 · 1999-2007
CAT R1600G · 3176 -10.3 Liter CC, 629 CID L6 · 2005-2014
CAT R1700 II · 3176 -10.3 Liter CC, 629 CID L6 · 1999-2007
CAT R1700G · C11 -11.1 Liter CC, 667 CID L6 · 2004-2006
CAT R2900 · 3406 -14.6 Liter CC, 855 CID L6 · 1999-2007
CAT R2900G · C15 -15.2 Liter CC, 928 CID L6 · 2004-2008
CAT 3406 · 1985-1995 · 1985-1995
CAT 3408 · 1986-1997 · 1986-1997
CAT 3412 · 1986-1997 · 1986-1997
CAT 3508 · 1986-1993 · 1986-1993
CAT 3512 · 1986-1993 · 1986-1993
CAT 3516 · 1986-1993 · 1986-1993
MACK CL Series · E7 · 2003-2006
MACK CV Series · E7 · 2003-2007
MACK CV Series · EM7 · 2003-2007
MACK DM/DMM Series · EM7
MACK FCM Series · E7 · 2003-2006
MACK FDM Series · EM7 · 2003-2006
MACK Granite Series · E7 · 2003-2006
MACK RD Series · E7 · 2003-2006
MACK RD Series · EM7 · 2003-2006
MACK RL Series · E7 · 2003-2006
MACK RS Series · E7 · 2003-2006
MACK RS Series · EM7 · 2003-2006
MACK RW Series · E7 · 2003-2006
PREVOST C6 · 1998-2007 · 1998-2007
PREVOST Detroit Diesel 60 Series · 1998-2008 · 1998-2008
MCI CUMMINS ISX · 1998-2003 · 1998-2003
MCI M11 · 2004-2007 · 2004-2007
MCI N14 6 Cyl. 14.0L · 1998-2007 · 1998-2007

Specifications

Voltage	24V
Power	8.5KW
Teeth	11T*56mm
Unit Type	DELCO AFTERMARKET
Series	39MT
Design	PLGR
Rotation	CW
Part Number (AC DELCO)	323858
Part Number (ALL-TEK)	104-6853
Part Number (ARROWHEAD)	410-12312, SDR0472, D19011522, D19011523, D8200330, D8200699, D8200719, SDR0313, SDR0314, SDR0317, SDR0330, SDR0333, SDR0472
Part Number (ATLANTIC QUALITY PARTS)	1700-0158
Part Number (BOSCH)	1371018
Part Number (CASE)	87439325, 260493C91
Part Number (CATERPILLAR)	207-1556
Part Number (CUMMINS)	135160, 2871256, 3103305, 3103916, 3103952, 5284083, 5284085
Part Number (DELCO REMY)	61003202, 10461754, 10461756, 10479119, 10479120, 19011507, 19011509, 19011522, 19011523, 19011527, 8200009, 8200022, 8200032, 8200034, 8200039, 8200041, 8200284, 8200321, 8200330, 8200330P, 8200410, 8200412, 8200430, 8200522, 8200614, 8200699, 8200704, 8200706, 8200709, 8200719, 8200724, 8200725, 8201037, 8201055, 8300016, 8300018, 8300036, 10461024, 10478986, 10478996, 10479211, 1990344, 1990361, 10461054
Part Number (DENSO)	428000-1451
Part Number (FORD/NEW HOLLAND)	87439325
Part Number (J & N)	410-12276, 410-12286, 410-12312, 410-12320, 410-12709, 410-12721
Part Number (LEECE NEVILLE)	M105702
Part Number (LESTER)	6819, 6829, 6837, 6851, 6852, 6853, 6993, 6994
Part Number (LUCAS ELECTRIC)	LRS04040
Part Number (MITSUBISHI)	82378, M9T82378, M009T82378, M9T82479, M009T82479, M9T83379, M009T83379, M9T83579, 71-01-1008, MC2378
Part Number (WAI)	50-151, 50-151-1, 50-151-2, 50-151-3, 510751, 510752
Part Number (WILSON)	91-01-3700N, 91013700, PV2479
Part Number (AFTERMARKET)	142000X, 21126X, MBRS142000X, MDRS142000X, MIRS142000X, MSMDRS142000X, S-80246
Part Number	AC DELCO: 323858 ALL-TEK: 104-6853 ARROWHEAD: 410-12312, SDR0472, D19011522, D19011523, D8200330, D8200699, D8200719, SDR0313, SDR0314, SDR0317, SDR0330, SDR0333, SDR0472 ATLANTIC QUALITY PARTS: 1700-0158 BOSCH: 1371018 CASE: 87439325, 260493C91 CATERPILLAR: 207-1556 CUMMINS: 135160, 2871256, 3103305, 3103916, 3103952, 5284083, 5284085 DELCO REMY: 61003202, 10461754, 10461756, 10479119, 10479120, 19011507, 19011509, 19011522, 19011523, 19011527, 8200009, 8200022, 8200032, 8200034, 8200039, 8200041, 8200284, 8200321, 8200330, 8200330P, 8200410, 8200412, 8200430, 8200522, 8200614, 8200699, 8200704, 8200706, 8200709, 8200719, 8200724, 8200725, 8201037, 8201055, 8300016, 8300018, 8300036, 10461024, 10478986, 10478996, 10479211, 1990344, 1990361, 10461054 DENSO: 428000-1451 FORD/NEW HOLLAND: 87439325 J & N: 410-12276, 410-12286, 410-12312, 410-12320, 410-12709, 410-12721 LEECE NEVILLE: M105702 LESTER: 6819, 6829, 6837, 6851, 6852, 6853, 6993, 6994 LUCAS ELECTRIC: LRS04040 MITSUBISHI: 82378, M9T82378, M009T82378, M9T82479, M009T82479, M9T83379, M009T83379, M9T83579, 71-01-1008, MC2378 WAI: 50-151, 50-151-1, 50-151-2, 50-151-3, 510751, 510752 WILSON: 91-01-3700N, 91013700, PV2479 AFTERMARKET: 142000X, 21126X, MBRS142000X, MDRS142000X, MIRS142000X, MSMDRS142000X, S-80246

Fitment Notes

Brand or application signal: Caterpillar Engine Spare Parts
Product family: Starter Motor
System category: Engine Spare Parts > Engine Auxiliary Components > Starter Motor
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.