Ram

Ram 3500 Bed Sizes & Dimensions

Inside bed length, width between the wheel wells and depth for the Ram 3500, 1994 to today — plus which camper shells and tonneau covers swap between years. The current truck comes with 6'4" or 8'0" beds.

2019–present Ram 3500

Verified 2026
BedCabsLength
at floor		Max widthBetween
wheel wells		DepthVolume
6'4" box
6'4" nominal		 Crew Cab, Mega Cab 76.3″66.4″51″20.1″ —
8' box
8'0" nominal		 Regular Cab, Crew Cab 98.3″66.4″51″20.2″ —
6'4" box: 76.3 in long, 66.4 in wide, 51.0 in between wheel wells cab → Length 76.3″ Max 66.4″ 51.0″ between wells tail-gate
Top view. Depth (floor to rail): 20.1″

Camper shell & cover swaps

Same bed box as:

A shell from one of these trucks with the same bed length should sit on the rails, but cab height, back-window angle, tailgate type and rail caps can still stop it from fitting. Confirm with the shell maker before you buy.

Compare this bed →

  • Mega Cab uses the 6'4" box only. 3500 dually uses the 8' box with wider fenders; inside dimensions are the same.

2010–2018 Ram 3500

Spot-check
BedCabsLength
at floor		Max widthBetween
wheel wells		DepthVolume
6'4" box
6'4" nominal		 Crew Cab, Mega Cab 76.3″65.5″51″20.1″ —
8' box
8'0" nominal		 Regular Cab, Crew Cab 98.3″65.5″51″20.1″ —
6'4" box: 76.3 in long, 65.5 in wide, 51.0 in between wheel wells cab → Length 76.3″ Max 65.5″ 51.0″ between wells tail-gate
Top view. Depth (floor to rail): 20.1″

Camper shell & cover swaps

Same bed box as:

A shell from one of these trucks with the same bed length should sit on the rails, but cab height, back-window angle, tailgate type and rail caps can still stop it from fitting. Confirm with the shell maker before you buy.

Compare this bed →

  • Lengths match the 2019+ HD bed. Many shell makers fit 2010–2024 HD beds with the same shell, but tailgate and cab shapes changed in 2019 — confirm with your shell maker.

Older Ram 3500 bed sizes (1994–2014)

From our original tables. Bed width is inside rail to inside rail; length is from the front bed wall at the floor to the end of the bed. Wheel wells take up space inside these numbers.

Ram 3500 · 2010–2014 — 6 configurations
YearsCab (Ram term)Universal cabBed (Ram term)Universal bedLengthWidth at cabWidth at tailgate
2010–2014RegularRegularLong DualLong Dually96.38″65.5″62.06″
2010–2014CrewCrewShortShort74.25″65.38″62.06″
2010–2014CrewCrewLongLong96.38″65.5″62.06″
2010–2014CrewCrewLong DualLong Dually96.38″65.5″62.06″
2010–2014MegaMegaShortShort74.25″65.38″62.06″
2010–2014MegaMegaShort DualShort Dually74.25″65.38″62.06″
Ram 3500 RamBox · 2010–2014 — 1 configurations
YearsCab (Ram term)Universal cabBed (Ram term)Universal bedLengthWidth at cabWidth at tailgate
2010–2014*AnyAnyAnyAnyStd Length52.625″52.625″
Ram 3500 · 2006–2009 — 6 configurations
YearsCab (Ram term)Universal cabBed (Ram term)Universal bedLengthWidth at cabWidth at tailgate
2006–2009RegularRegularLong DualLong Dually96.5″65.5″62.19″
2006–2009QuadExtendedShortShort74.5″65.5″62.19″
2006–2009QuadExtendedLongLong96.5″65.5″62.19″
2006–2009QuadExtendedLong DualLong Dually96.5″65.5″62.19″
2006–2009MegaMegaShortShort74.5″65.5″62.19″
2006–2009MegaMegaShort DualShort Dually74.5″65.5″62.19″
Ram 3500 · 2003–2005 — 4 configurations
YearsCab (Ram term)Universal cabBed (Ram term)Universal bedLengthWidth at cabWidth at tailgate
2003–2005RegularRegularLong DualLong Dually96.5″65.5″62.19″
2003–2005QuadExtendedShortShort74.5″65.5″62.19″
2003–2005QuadExtendedLongLong96.5″65.5″62.19″
2003–2005QuadExtendedLong DualLong Dually96.5″65.5″62.19″
Ram 3500 · 2002–2002 — 3 configurations
YearsCab (Ram term)Universal cabBed (Ram term)Universal bedLengthWidth at cabWidth at tailgate
2002–2002RegularRegularLongLong96.5″65.5″62.88″
2002–2002QuadExtendedShortShort76.5″65.5″62.88″
2002–2002QuadExtendedLongLong96.5″65.5″62.88″
Ram 3500 · 1994–2001 — 2 configurations
YearsCab (Ram term)Universal cabBed (Ram term)Universal bedLengthWidth at cabWidth at tailgate
1994–2001RegularRegularLong DualLong Dually96.5″65.5″62.88″
1994–2001QuadExtendedLong DualLong Dually96.5″65.5″62.88″

Accessories that fit the Ram 3500

All accessories

2019–now Ram 3500 → all accessories

Bed covers (tonneaus) Steps & running boards Grille guards & bull bars Ladder & bed racks Truck toolboxes Bed storage & organizers Bed mats Floor liners Lights Strobes & warning lights Hitches & towing Shell & topper parts Fuses & wiring

  • Tyger T3 Soft Tri-Fold Tonneau Cover — 6.4 ftAmazon
  • Tyger T3 Soft Tri-Fold Tonneau Cover — 8 ftAmazon

Covers and mats by brand for the 2026 Ram 2500: BAKFlip covers UnderCover covers Roll-N-Lock covers Extang covers Husky Liners mats Michelin mats BedRug mats

2010–2018 Ram 3500 → all accessories

Bed covers (tonneaus) Steps & running boards Grille guards & bull bars Ladder & bed racks Truck toolboxes Bed storage & organizers Bed mats Floor liners Lights Strobes & warning lights Hitches & towing Shell & topper parts Fuses & wiring

  • Tyger T3 Soft Tri-Fold Tonneau Cover — 6.4 ftAmazon
  • Tyger T3 Soft Tri-Fold Tonneau Cover — 8 ftAmazon

Covers and mats by brand for the 2018 Ram 2500: BAKFlip covers UnderCover covers Roll-N-Lock covers Extang covers Husky Liners mats Michelin mats BedRug mats

2003–2009 Ram 3500 → all accessories

Bed covers (tonneaus) Steps & running boards Grille guards & bull bars Ladder & bed racks Truck toolboxes Bed storage & organizers Bed mats Floor liners Lights Strobes & warning lights Hitches & towing Shell & topper parts Fuses & wiring

  • Tyger T3 Soft Tri-Fold Tonneau Cover — 6.4 ftAmazon
  • Tyger T3 Soft Tri-Fold Tonneau Cover — 8 ftAmazon

Covers and mats by brand for the 2009 Dodge Ram 2500: BAKFlip covers UnderCover covers Roll-N-Lock covers Extang covers Husky Liners mats Michelin mats BedRug mats

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Owner fit reports

Add yours

Swapped a shell, fit a tonneau, or measured your bed? Tell other owners what worked. Approved reports appear here.

All Ram 3500 reports →