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Workhorse Exhaust Manifold

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Left Exhaust Manifold with Gasket for 2003 Workhorse FasTrack FT931Left Exhaust Manifold with Gasket for 2003 Workhorse FasTrack FT931
A-Premium®Part # APEMD176
Left Exhaust Manifold with Gasket for 2003 Workhorse FasTrack FT931
4.448 Reviews
$118.99
Quantity Less than 2
Edit ZIP code
3-year warranty
90 days free return
Fits 2003 Workhorse FasTrack FT931
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-523, 101552, 12574406, 12592082
item #1000HWTC
Note
This item comes with 1 Exhaust Manifold, 2 Manifold Gaskets, 1 Flange Gasket, 3 Studs,ans 3 Nuts.
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Right Exhaust Manifold with Gasket for 2000-2005 Workhorse P30
A-Premium®Part # APEMD175
Right Exhaust Manifold with Gasket for 2000-2005 Workhorse P30
4.448 Reviews
$137.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse P30: 2000 2001 2002 2003 2004 2005
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-446, 101168, 12554981, 8125549810, 8938023370, 93802337
item #1000GGZ7
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs and 3x Nuts.
Show less
Left Exhaust Manifold with Gasket for 2000-2005 Workhorse P30
A-Premium®Part # APEMD185
Left Exhaust Manifold with Gasket for 2000-2005 Workhorse P30
4.448 Reviews
$138.99
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse P30: 2000 2001 2002 2003 2004 2005
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-860, 101475, 12552801, 12555002, 8125528010, 8938023390, 93802339
item #1000GN0Z
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs, 3x Nuts and Mounting Hardware.
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A-Premium APEMD217 2002 Workhorse FasTrack FT931 Exhaust Manifold Left Driver Side
A-Premium®Part # APEMD217
A-Premium APEMD217 2002 Workhorse FasTrack FT931 Exhaust Manifold Left Driver Side
4.448 Reviews
$100.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2002 Workhorse FasTrack FT931
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorMetallic Gray
ConditionNew
item #1006DNN7
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Left Exhaust Manifold with Gasket for 2005-2011 Workhorse LF72
A-Premium®Part # APEMD088
Left Exhaust Manifold with Gasket for 2005-2011 Workhorse LF72
4.448 Reviews
$90.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse LF72: 2005 2006 2007 2008 2009 2010 2011
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-731, 12624684, 12637647, 97224587
item #1003ZAUL
Note
【Note-1】 This item comes with 1 Manifold Gasket, 1 Flange, 3 Studs & 3 Washers.
【Note-2】 It is only suitable for diesel vehicles.
Show less
Right Exhaust Manifold with Gasket for 2000-2004 Workhorse Custom Chassis P42
A-Premium®Part # APEMD175
Right Exhaust Manifold with Gasket for 2000-2004 Workhorse Custom Chassis P42
4.448 Reviews
$137.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse Custom Chassis P42: 2000 2001 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-446, 101168, 12554981, 8125549810, 8938023370, 93802337
item #1000GLRV
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs and 3x Nuts.
Show less
Left Exhaust Manifold with Gasket for 2000-2004 Workhorse Custom Chassis P42
A-Premium®Part # APEMD185
Left Exhaust Manifold with Gasket for 2000-2004 Workhorse Custom Chassis P42
4.448 Reviews
$138.99
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse Custom Chassis P42: 2000 2001 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-860, 101475, 12552801, 12555002, 8125528010, 8938023390, 93802339
item #1000GL8U
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs, 3x Nuts and Mounting Hardware.
Show less
Right Exhaust Manifold with Gasket for 2005-2011 Workhorse LF72
A-Premium®Part # APEMD090
Right Exhaust Manifold with Gasket for 2005-2011 Workhorse LF72
4.448 Reviews
$115.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse LF72: 2005 2006 2007 2008 2009 2010 2011
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-736, 12624683
item #1003ZAYH
Note
This item comes with 1 Manifold Gasket, 1 Flange, 3 Studs & 3 Washers.
Show less
Left Exhaust Manifold with Gasket for 2005 Workhorse Custom Chassis P42
A-Premium®Part # APEMD088
Left Exhaust Manifold with Gasket for 2005 Workhorse Custom Chassis P42
4.448 Reviews
$90.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 2005 Workhorse Custom Chassis P42
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-731, 12624684, 12637647, 97224587
item #1003Z9CY
Note
【Note-1】 This item comes with 1 Manifold Gasket, 1 Flange, 3 Studs & 3 Washers.
【Note-2】 It is only suitable for diesel vehicles.
Show less
Right Exhaust Manifold with Gasket for 2002-2005 Workhorse FasTrack FT1261
A-Premium®Part # APEMD175
Right Exhaust Manifold with Gasket for 2002-2005 Workhorse FasTrack FT1261
4.448 Reviews
$137.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse FasTrack FT1261: 2002 2003 2004 2005
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-446, 101168, 12554981, 8125549810, 8938023370, 93802337
item #1000GKCE
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs and 3x Nuts.
Show less
Left Exhaust Manifold with Gasket for 2002-2004 Workhorse FasTrack FT1061
A-Premium®Part # APEMD185
Left Exhaust Manifold with Gasket for 2002-2004 Workhorse FasTrack FT1061
4.448 Reviews
$138.99
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse FasTrack FT1061: 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-860, 101475, 12552801, 12555002, 8125528010, 8938023390, 93802339
item #1000GH24
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs, 3x Nuts and Mounting Hardware.
Show less
Right Exhaust Manifold with Gasket for 2005 Workhorse Custom Chassis P42
A-Premium®Part # APEMD090
Right Exhaust Manifold with Gasket for 2005 Workhorse Custom Chassis P42
4.448 Reviews
$115.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 2005 Workhorse Custom Chassis P42
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-736, 12624683
item #1003Z9EG
Note
This item comes with 1 Manifold Gasket, 1 Flange, 3 Studs & 3 Washers.
Show less
Left Exhaust Manifold with Gasket for 2009 Workhorse R26
A-Premium®Part # APEMD088
Left Exhaust Manifold with Gasket for 2009 Workhorse R26
4.448 Reviews
$90.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 Workhorse R26
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-731, 12624684, 12637647, 97224587
item #1003Z9UH
Note
【Note-1】 This item comes with 1 Manifold Gasket, 1 Flange, 3 Studs & 3 Washers.
【Note-2】 It is only suitable for diesel vehicles.
Show less
Right Exhaust Manifold with Gasket for 2002-2003 Workhorse FasTrack FT1802
A-Premium®Part # APEMD175
Right Exhaust Manifold with Gasket for 2002-2003 Workhorse FasTrack FT1802
4.448 Reviews
$137.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse FasTrack FT1802: 2002 2003
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-446, 101168, 12554981, 8125549810, 8938023370, 93802337
item #1000GEH1
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs and 3x Nuts.
Show less
Left Exhaust Manifold with Gasket for 2002-2005 Workhorse FasTrack FT1261
A-Premium®Part # APEMD185
Left Exhaust Manifold with Gasket for 2002-2005 Workhorse FasTrack FT1261
4.448 Reviews
$138.99
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse FasTrack FT1261: 2002 2003 2004 2005
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-860, 101475, 12552801, 12555002, 8125528010, 8938023390, 93802339
item #1000GGC3
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs, 3x Nuts and Mounting Hardware.
Show less
Right Exhaust Manifold with Gasket for 2009 Workhorse R26
A-Premium®Part # APEMD090
Right Exhaust Manifold with Gasket for 2009 Workhorse R26
4.448 Reviews
$115.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 Workhorse R26
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-736, 12624683
item #1003ZCG6
Note
This item comes with 1 Manifold Gasket, 1 Flange, 3 Studs & 3 Washers.
Show less
2 Pcs Left & Right Exhaust Manifold with Gasket for 2005 Workhorse Custom Chassis P42 6.6L V8
A-Premium®Part # APEMD157
2 Pcs Left & Right Exhaust Manifold with Gasket for 2005 Workhorse Custom Chassis P42 6.6L V8
4.448 Reviews
$199.99
Only 1 item left in stock
Edit ZIP code
3-year warranty
90 days free return
Fits 2005 Workhorse Custom Chassis P42
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity2
Installation PositionDriver & Passenger
MaterialCast Iron
Part interchange
674-731, 12624684, 12637647, 97224587, 674-736, 12624683
item #1001GNCW
Note
【Note-1】 This item comes with 2 Manifold Gaskets, 2 Flange, 6 Studs & 6 Washers.
【Note-2】 It is only suitable for diesel vehicles.
【Note-3】 For the 2009 Workhorse R26, it fits the V8 403 6.6L (6599cc) Diesel model Only.
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Right Exhaust Manifold with Gasket for 2001-2002 Workhorse P32
A-Premium®Part # APEMD175
Right Exhaust Manifold with Gasket for 2001-2002 Workhorse P32
4.448 Reviews
$137.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse P32: 2001 2002
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-446, 101168, 12554981, 8125549810, 8938023370, 93802337
item #1000GGT9
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs and 3x Nuts.
Show less
Left Exhaust Manifold with Gasket for 2000-2001 Workhorse FasTrack FT1800
A-Premium®Part # APEMD185
Left Exhaust Manifold with Gasket for 2000-2001 Workhorse FasTrack FT1800
4.448 Reviews
$138.99
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse FasTrack FT1800: 2000 2001
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionLeft Driver Side
MaterialCast Iron
ColorNatural
Part interchange
674-860, 101475, 12552801, 12555002, 8125528010, 8938023390, 93802339
item #1000GG4E
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs, 3x Nuts and Mounting Hardware.
Show less
Right Exhaust Manifold with Gasket for 2002-2004 Workhorse FasTrack FT1061
A-Premium®Part # APEMD175
Right Exhaust Manifold with Gasket for 2002-2004 Workhorse FasTrack FT1061
4.448 Reviews
$137.99
Quantity Less than 5
Edit ZIP code
3-year warranty
90 days free return
Fits Workhorse FasTrack FT1061: 2002 2003 2004
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Workhorse
Item LocatedUnited States
Quantity1
Installation PositionRight Passenger Side
MaterialCast Iron
ColorNatural
Part interchange
674-446, 101168, 12554981, 8125549810, 8938023370, 93802337
item #1000GHQV
Note
It comes with 1x Exhaust Manifold, 1x Manifold Gasket, 1x Flange Gasket, 3x Studs and 3x Nuts.
Show less
Page 1 of 2

Bad exhaust manifold symptoms

  • Exhaust leaks - Visible cracks, holes, or damage in the exhaust manifold, audible hissing or rumbling sounds coming from the engine compartment, and the smell of exhaust fumes inside the cabin.
  • Engine performance issues - Rough or uneven engine idle, hesitation or loss of power during acceleration, and decrease in fuel efficiency.
  • Increased emissions - Failed emissions or smog test, and increased visible exhaust smoke or soot.
  • Overheating - Elevated engine temperature readings and the smell of burning or overheated components.
  • Check engine light illumination - Diagnostic trouble codes related to the exhaust manifold or oxygen sensors.
  • Vibrations or noises - Rattling, banging, or other abnormal noises coming from the engine compartment, and increased overall engine vibrations.

A guide to exhaust manifold replacement

To begin the exhaust manifold replacement process, the vehicle must be safely raised and secured on jack stands or a lift. The mechanic will then disconnect the negative battery cable to prevent any electrical issues during the repair. Next, they will locate the exhaust manifold, which is typically situated at the top of the engine, and begin disconnecting it from the rest of the exhaust system. This involves unbolting the manifold from the cylinder head as well as detaching it from the catalytic converter or downpipe flanges.

With the old manifold removed, the mechanic will carefully inspect the mounting surface on the cylinder head to ensure it is free of any debris or damage. They will then install the new replacement manifold, taking care to properly align the bolt holes and create a tight seal with new gaskets. The manifold bolts are tightened to the manufacturer's specified torque, and the entire exhaust system is checked for leaks. Finally, the battery cable is reconnected, and the vehicle is lowered back to the ground, allowing the engine to be started and the repair to be thoroughly tested.

A-Premium exhaust manifolds - Engineered excellence

A-Premium exhaust manifolds deliver reliable performance and lasting durability. Crafted from premium heat-resistant alloys, our manifolds resist warping, cracking, and corrosion. The precision design ensures a perfect fit and secure, leak-free sealing. With enhanced vibration resistance and easy maintenance, A-Premium manifolds help maintain optimal exhaust flow for improved efficiency and emissions control. In addition to offering a 90-day free return policy and a 3-year warranty, our customer service team is available 24/7 to assist you. Trust A-Premium to keep your vehicle's exhaust system running at its best.