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Description
Belt Tensioner 5270678 for Cummins B3.3/B4.5/4B3.9 EnginesReplacement part number: 5270678, 4929688, 38702, 0239233 Fit for Cummins Engine: B3. 3, B4. 5, 4B3. 9, 6B5. 9, B6. 7, B6. 7 CM2350 B121B, B6. 7 CM2350 B136C, B6. 7 CM2350 B157C, B6. 7 CM2450 B155B, B6. 7N CM2380 B150B, ISB CM2150, ISB ISD6. 7 CM2150 SN, ISB6. 7 CM2250, ISB6. 7 CM2350 B101, ISB6. 7 G CM2180 B118, ISBE CM2150, ISBE4 CM850, ISL CM554, L9 CM2350 L116B, QSB3. 3 CM2150, QSB3. 3 CM2250 EC, QSB6. 7 CM2250, QSB6. 7 CM2250 EC, QSB6. 7 CM2350
Replacement part number:
5270678, 4929688, 38702, 0239233Fit for Cummins Engine:
B3.3, B4.5, 4B3.9, 6B5.9, B6.7, B6.7 CM2350 B121B, B6.7 CM2350 B136C, B6.7 CM2350 B157C, B6.7 CM2450 B155B, B6.7N CM2380 B150B, ISB CM2150, ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISB6.7 G CM2180 B118, ISBE CM2150, ISBE4 CM850, ISL CM554, L9 CM2350 L116B, QSB3.3 CM2150, QSB3.3 CM2250 EC, QSB6.7 CM2250, QSB6.7 CM2250 EC, QSB6.7 CM2350 B105, QSG12/X12 CM2350 G110, ISB, QSB
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.5 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Devider for his room
Size: 6FT*6FT, Color: Bright Yellow
Its a gift for my son he loved it
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Reviewed in the United States on May 30, 2026
★★★★★ 4
Decent value for the money.
Size: 6FT*6FT, Color: Grey
Was easy to assemble. Instructions were clear. Tools were supplied. It really needs to be assembled wherever you're going to be putting it as it can come apart easily when moved. The cross bars simply fit into open ended plastic 90 degree female ends. Overall for the money and to just have some division in a room it's a good value.
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Reviewed in the United States on January 23, 2025
★★★★★ 5
It's so perfect
Size: 10FT*6FT, Color: Black
It is very long and big
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Reviewed in the United States on May 25, 2026
★★★★★ 1
Garbage
Size: 6FT*6FT, Color: Black
This product is absolute garbage! It literally took all day to put it together and if the air conditioning blows on it the wrong way than the whole thing top over and it falls apart.
It’s not made of quality material and is very flimsy. The only reason I’m not returning it is because it’s too difficult to put together and I don’t wanna spend that much time trying to take it apart. Do not buy this!
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Reviewed in the United States on September 25, 2025
★★★★★ 3
Cheap
Size: 6FT*6FT, Color: Black
They serve their purpose as long as you leve them in one place and not moving them around and they're kinda flimsy and some of the velcros are cut too short and can't stay closed
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Reviewed in the United States on April 18, 2026