SKU: 27016670335

1972-1997 Dodge B, CB and MB Series Rear Leaf Spring 34-123

Sale price$146.24 Regular price$162.49
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Description

1972-1997 Dodge B, CB and MB Series Rear Leaf Spring 34-123Number of Leaves 7 (6 1) Leaf Spring Width 2 1 2" A Spring Length: 23" B Spring Length: 30 3 4" Leaf Spring Arch: 5 1 8" C Leaf Spring Pack Thickness: 2 3 4" Leaf Spring Capacity: 3,250 lbs Leaf Spring OEM Number: 3638595 Leaf Spring Eye Bushings: Front RB 60 Rear RB 58 Includes Front and Rear Eye Bushings Leaf Spring Material: 3 360 3 341 2ND 1 662 Location Rear Verify the OEM part number and dimensions before purchase. Match with your existing

  • Number of Leaves - 7 (6/1)
  • Leaf Spring Width - 2-1/2"
  • A - Spring Length: 23"
  • B - Spring Length: 30-3/4"
  • - Leaf Spring Arch: 5 1/8"
  • C- Leaf Spring Pack Thickness: 2-3/4"
  • Leaf Spring Capacity: 3,250 lbs
  • Leaf Spring OEM Number: 3638595
  • Leaf Spring Eye Bushings: Front RB-60 / Rear RB-58
  • Includes Front and Rear Eye Bushings
  • Leaf Spring Material: 3/360 3/341 2ND 1/662
  • Location - Rear


Verify the OEM part number and dimensions before purchase. Match with your existing spring to the manufacturer part number. Need help? Visit: How to Identify a Leaf Spring.

Leaf spring 34-123 is the rear leaf spring on Dodge B300, B350, CB300, CB400, MB300 and MB400. The rear spring is 2-1/2" wide and is a 7 (6/1) leaf spring. The capacity of this leaf spring is 3,250 lbs. and the OEM part number is 3638595.


Models and Year Ranges:

Fits: 1972-1997 Rear Dodge B300 And B350 (With One Piece Style Shackle)

Fits:1972-1981 Rear Dodge CB300 Commercial Chassis (With One Piece Style Shackle)

Fits: 1972-1981 Rear Dodge CB400 Commercial Chassis

Fits: 1972-1981 Rear Dodge MB300 Motorhome Chassis (With One Piece Style Shackle)

Fits: 1972-1981 Rear Dodge MB400 Motorhome Chassis

Shipping Notes
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Exchange/Return Notes
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SKU: 27016670335

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Hervey P.
Lowell, US
★★★★★ 4
Bosch spark plug are okay... for now.
I'm ususally a Denso Iridium Long-Life or NGK Laser Iridium kind of guy for my Acura or Honda spark plugs. I purchased these on short noticed when I got hit with CEL, grabbed my OBD2 scanner read misfire in all 6 cylinder in my J35a8 (Acura TL Type-S) when I arrived home late that night; I know right, of all places thank goodness. Anyways, I further started to diagnose the car from the least expense before assume the most expensive parts; the spark plugs upon inspection showed they reach it service life. Grabbed my phone in hopes for an overnight prime shipping and encounter these Bosch spark plugs. I installed them the next morning before going to work and all 6 cylinders misfire went away. Sidebar spark plug gap were within factory spec and are somewhat similar to OE. Its been a few week so far still good 👍. For the price it wasn't expensive but I had to order two 4 pack cause the individual spark plug took a few days extra to ship. Gas mileage slightly improve not by a lot, but I'll take it since gas price have gone up. Make sure to properly torque it with either 1/4 or 3/8 torque wrench when I last check they slightly backed out. Since I torque it down to factory recommendation it has stay put since. Will update again in the near future...
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Reviewed in the United States on May 15, 2026
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Rock
Belleville, US
★★★★★ 5
FITS 2006 CIVIC
Fits 2006 Civic and running good so far.
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Reviewed in the United States on February 7, 2026
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Angela | Lifestyle Creator • Cat Mom
Omaha, US
★★★★★ 5
Reliable oil for BMW owners
I drive a BMW, and this is the oil I always keep with me in the car. I even have a special holder made for this exact bottle, because it fits perfectly and I trust it that much. The oil quality is excellent, and since it’s fully synthetic, it performs well even during long drives and temperature changes. In terms of functionality, the engine runs smoothly and quietly after each change. Longevity is also great. I notice that the oil keeps its properties for the full interval, so I don’t have to top it up too often. There’s also no oil leakage from the bottle, which is important when you store it in the trunk. For a branded BMW product, I think the value for money is good, especially if you service your car yourself or like to have backup oil on hand. Overall, a dependable synthetic oil for anyone who wants to use what the car was designed for.
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Reviewed in the United States on November 2, 2025
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Marcelo
Port Orchard, US
★★★★★ 5
Great product
Great
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Reviewed in the United States on February 18, 2026
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ShN
Massapequa, US
★★★★★ 5
Right oil for my bmw
It has worked great for me for the BMW X5. The price is great. I am purchasing these for a few years now I know every Bmw needs to have one Handy in the car just in case the signal comes to add more oil. I am very happy with this product.
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