AP Exhaust H400 Exhaust Clamp

Brand AP Exhaust H400
Finish Natural
Material Mild Steel
Pipe Diameter (IN) 4
Thread Diameter (IN) 3/8
Fits Ram and Dodge · 87 vehicles

Natural finish. Helps resist surface wear while keeping the clamp looking clean.

Mild steel construction. Provides dependable strength for exhaust connections.

4-inch pipe diameter. Sized for a secure exhaust clamp fit.

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AP Exhaust H400 Exhaust Clamp for Ram Trucks

The AP Exhaust H400 is a natural-finish exhaust clamp built from mild steel for 4-inch exhaust pipe connections. It uses a 3/8-inch thread diameter and is listed for a wide range of Dodge Ram 2500 and Ram 3500 applications, including aftermarket-design exhaust setups.

Key Features

  • Part number H400 from AP Exhaust
  • 4-inch pipe diameter for exhaust system clamping
  • 3/8-inch thread diameter
  • Mild steel construction
  • Natural finish
  • Fits multiple Dodge Ram 2500 and Ram 3500 model years

Detailed Description

AP Exhaust H400 is an exhaust clamp for securing 4-inch exhaust pipe sections in Ram truck exhaust systems. The mild steel construction and natural finish make it a straightforward hardware choice for exhaust service, replacement, or custom-fit aftermarket exhaust work. This part number H400 is listed across 1994 through 2012 Ram 2500 and Ram 3500 applications, including diesel and aftermarket-design configurations where specified.

Fits 2011-2012 Ram 2500, N/A. Fits 2011-2012 Ram 3500, N/A. Fits 2007-2010 Dodge Ram 2500, N/A. Fits 2007-2010 Dodge Ram 3500, N/A. Fits 2005-2009 Dodge Ram 2500, N/A. Fits 2005-2007 Dodge Ram 3500, N/A. Fits 1998-2002 Dodge Ram 2500, N/A. Fits 1998-2002 Dodge Ram 3500, N/A. Fits 1995-1997 Dodge Ram 2500, N/A. Fits 1995-1997 Dodge Ram 3500, N/A. Fits 1994 Dodge Ram 2500, N/A. Fits 1994 Dodge Ram 3500, N/A.

Common Uses

  • Replacing a worn or damaged exhaust clamp on Ram 2500 and Ram 3500 trucks
  • Securing 4-inch exhaust pipe joints in aftermarket exhaust systems
  • Restoring a tight connection where exhaust leakage is present at the clamp point
  • Supporting exhaust service on diesel-equipped Ram truck applications

Installation Notes and Tips

Verify the exhaust pipe diameter before installation; this clamp is sized for 4-inch pipe. Confirm thread size and clamp alignment during assembly so the joint seats evenly and maintains proper exhaust sealing. For fitment-specific use, match the vehicle year, model, and notes shown for your Ram 2500 or Ram 3500 application.

Quality Assurance

AP Exhaust supplies exhaust hardware for service and replacement applications. This H400 clamp is built with mild steel and a natural finish for straightforward exhaust system use.

This part fits 87 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersFuel TypeWheel BasePositionNotes
2012Ram2500—6.7LL6——N/AAftermarket Design
2012Ram3500Standard Cab Pickup6.7LL6——N/AAftermarket Design
2012Ram3500Crew Cab Pickup6.7LL6——N/AAftermarket Design
2012Ram3500Extended Crew Cab Pickup6.7LL6——N/AAftermarket Design
2011Ram2500—6.7LL6——N/AAftermarket Design
2011Ram3500Crew Cab Pickup6.7LL6——N/AAftermarket Design
2011Ram3500Extended Crew Cab Pickup6.7LL6——N/AAftermarket Design
2011Ram3500Standard Cab Pickup6.7LL6——N/AAftermarket Design
2010DodgeRam 2500—6.7LL6——N/AAftermarket Design
2010DodgeRam 3500Standard Cab Pickup6.7LL6——N/AAftermarket Design
2010DodgeRam 3500Crew Cab Pickup6.7LL6——N/AAftermarket Design
2010DodgeRam 3500Extended Crew Cab Pickup6.7LL6——N/AAftermarket Design
2009DodgeRam 2500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2009DodgeRam 2500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2009DodgeRam 2500—6.7LL6——N/AAftermarket Design
2009DodgeRam 3500Crew Cab Pickup6.7LL6——N/AAftermarket Design
2009DodgeRam 3500Extended Crew Cab Pickup6.7LL6——N/AAftermarket Design
2009DodgeRam 3500Standard Cab Pickup6.7LL6——N/AAftermarket Design
2008DodgeRam 2500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2008DodgeRam 2500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2008DodgeRam 2500—6.7LL6——N/AAftermarket Design
2008DodgeRam 3500Extended Crew Cab Pickup6.7LL6——N/AAftermarket Design
2008DodgeRam 3500Crew Cab Pickup6.7LL6——N/AAftermarket Design
2008DodgeRam 3500Standard Cab Pickup6.7LL6——N/AAftermarket Design
2007DodgeRam 2500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2007DodgeRam 2500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2007DodgeRam 2500—6.7LL6——N/AAftermarket Design
2007DodgeRam 3500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2007DodgeRam 3500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2007DodgeRam 3500Crew Cab Pickup6.7LL6——N/AAftermarket Design
2007DodgeRam 3500Extended Crew Cab Pickup6.7LL6——N/AAftermarket Design
2007DodgeRam 3500Standard Cab Pickup6.7LL6——N/AAftermarket Design
2006DodgeRam 2500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2006DodgeRam 2500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2006DodgeRam 3500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2006DodgeRam 3500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2005DodgeRam 2500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2005DodgeRam 2500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2005DodgeRam 3500—5.9LL6DIESEL140.5"N/A140.50", 160.50" W.B.
2005DodgeRam 3500—5.9LL6DIESEL160.5"N/A140.50", 160.50" W.B.
2002DodgeRam 2500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2002DodgeRam 2500—5.9LL6—134.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2002DodgeRam 2500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2002DodgeRam 3500—5.9LL6—135.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2002DodgeRam 3500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2002DodgeRam 3500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2001DodgeRam 2500—5.9LL6—134.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2001DodgeRam 2500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2001DodgeRam 2500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2001DodgeRam 3500—5.9LL6—135.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2001DodgeRam 3500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2001DodgeRam 3500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2000DodgeRam 2500—5.9LL6—134.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2000DodgeRam 2500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2000DodgeRam 2500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2000DodgeRam 3500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2000DodgeRam 3500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
2000DodgeRam 3500—5.9LL6—135.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1999DodgeRam 2500—5.9LL6—134.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1999DodgeRam 2500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1999DodgeRam 2500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1999DodgeRam 3500—5.9LL6—135.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1999DodgeRam 3500—5.9LL6—139.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1999DodgeRam 3500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1998DodgeRam 2500—5.9LL6—138.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1998DodgeRam 2500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1998DodgeRam 2500—5.9LL6—134.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1998DodgeRam 3500—5.9LL6—135.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1998DodgeRam 3500—5.9LL6—139.0"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1998DodgeRam 3500—5.9LL6—154.7"N/ARam 2500, 3500; 5.9L Diesel Engine; 2WD & 4WD; 135", 139" & 155" W.B.; Exc. Chassis Cab
1997DodgeRam 2500—5.9LL6—134.7"N/Aover 8800 lbs. G.V.W.
1997DodgeRam 2500Extended Cab Pickup5.9LL6—154.7"N/A—
1997DodgeRam 3500—5.9LL6—135.0"N/Aover 8800 lbs. G.V.W.
1997DodgeRam 3500—5.9LL6—139.0"N/A—
1997DodgeRam 3500—5.9LL6—163.0"N/A—
1996DodgeRam 2500—5.9LL6—134.7"N/Aover 8800 lbs. G.V.W.
1996DodgeRam 2500Extended Cab Pickup5.9LL6—155.0"N/A—
1996DodgeRam 3500—5.9LL6—135.0"N/Aover 8800 lbs. G.V.W.
1996DodgeRam 3500—5.9LL6—139.0"N/A—
1996DodgeRam 3500—5.9LL6—163.0"N/A—
1995DodgeRam 2500—5.9LL6—135.0"N/Aover 8800 lbs. G.V.W.
1995DodgeRam 2500Extended Cab Pickup5.9LL6—155.0"N/A—
1995DodgeRam 3500—5.9LL6—135.0"N/Aover 8800 lbs. G.V.W.
1995DodgeRam 3500—5.9LL6—139.0"N/A—
1995DodgeRam 3500—5.9LL6—163.0"N/A—
1994DodgeRam 2500—5.9LL6—135.0"N/Aover 8800 lbs. G.V.W.; after 9-27-93
1994DodgeRam 3500—5.9LL6—135.0"N/Aover 8800 lbs. G.V.W.; after 9-27-93