MPA Electrical 140-39121 Alternator
OE Quality 60-Day Returns
MPA Electrical
 New

MPA Electrical 140-39121 Alternator

Brand MPA Electrical 140-39121
Product line New
Fits Chevrolet and GMC · 43 vehicles

New replacement unit. Built as a fresh alternator for charging-system service.

12V, 110A output. Provides the specified electrical capacity for listed applications.

Vacuum pump not supplied. Use the original pump setup when the vehicle requires one.

$257.22Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $257.22
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Alternator options

Alternator for W-Series Trucks

This new alternator is built for Chevrolet and GMC W-Series medium-duty trucks that need a 12V, 110A charging unit. It fits multiple W3500, W4500, W5500, and W5500HD applications, including Tiltmaster and Forward models, with fitment defined by the vehicle listing below.

  • New alternator for charging-system replacement
  • 12V output with 110 amp capacity
  • Application-specific fitment for Chevrolet and GMC W-Series trucks
  • Listed for vehicles with IR/EF VP configuration
  • Vacuum pump not supplied

Fitment Details

Fits 2007-2010 Chevrolet W4500 Tiltmaster, N/A. Fits 2007-2010 Chevrolet W5500 Tiltmaster, N/A. Fits 1999-2002 Chevrolet W5500 Tiltmaster, N/A. Fits 2007-2010 GMC W4500 Forward, N/A. Fits 2007-2010 GMC W5500 Forward, N/A. Fits 1999-2002 GMC W5500 Forward, N/A. Fits 2007-2009 Chevrolet W3500 Tiltmaster, N/A. Fits 1999-2002 Chevrolet W3500 Tiltmaster, N/A. Fits 2007-2009 Chevrolet W5500HD Tiltmaster, N/A. Fits 2007-2009 GMC W5500HD Forward, N/A. Fits 2007-2008 GMC W3500 Forward, N/A. Fits 1999-2002 GMC W3500 Forward, N/A.

Installation Notes

Verify the vehicle’s charging-system configuration before ordering. This unit is listed for IR/EF VP applications, and the vacuum pump is not supplied. Confirm connector, mounting, and output requirements against the original alternator before installation.

Quality Assurance

MPA Electrical supplies this part as a new replacement alternator under part number 140-39121.

Related reading

This part fits 43 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2010ChevroletW4500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2010ChevroletW5500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2010GMCW4500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2010GMCW5500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009ChevroletW3500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009ChevroletW4500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009ChevroletW5500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009ChevroletW5500HD Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009GMCW4500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009GMCW5500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2009GMCW5500HD Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008ChevroletW3500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008ChevroletW4500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008ChevroletW5500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008ChevroletW5500HD Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008GMCW3500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008GMCW4500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008GMCW5500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2008GMCW5500HD Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007ChevroletW3500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007ChevroletW4500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007ChevroletW5500 Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007ChevroletW5500HD Tiltmaster5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007GMCW3500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007GMCW4500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007GMCW5500 Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2007GMCW5500HD Forward5.2LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2002ChevroletW3500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2002ChevroletW5500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2002GMCW3500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2002GMCW5500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2001ChevroletW3500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2001ChevroletW5500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2001GMCW3500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2001GMCW5500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2000ChevroletW3500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2000ChevroletW5500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2000GMCW3500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
2000GMCW5500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
1999ChevroletW3500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
1999ChevroletW5500 Tiltmaster4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
1999GMCW3500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New
1999GMCW5500 Forward4.8LL4ALT 12V 110A IR/EF VP HI VAC PUMP NOT SUPPLIED; New