Exhaust Outlet Pipe 3910992 for Cummins Engine 4BT 6BT QSB 4B3.9 B4.5 B5.9 ISB3.9 ISB5.9G QSB3.9
SKU: 91161486657

Exhaust Outlet Pipe 3910992 for Cummins Engine 4BT 6BT QSB 4B3.9 B4.5 B5.9 ISB3.9 ISB5.9G QSB3.9

$179.10 $199.00
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Description

Exhaust Outlet Pipe 3910992 for Cummins Engine 4BT 6BT QSB 4B3.9 B4.5 B5.9 ISB3.9 ISB5.9G QSB3.9Part Number: 3910992 Application: For Cummins Engine: 4BT,6BT,QSB,4B3. 9,B4. 5,B5. 9,ISB3. 9,ISB5. 9G,QSB3. 9,ISB6. 7,ISD4. 5,ISB QSB5. 9 44,ISD4. 5 CM2150,B5. 9 LPG Plus CM556,G5. 9,ISB 5. 9 G CM2180,B4. 5s,ISF3. 8 CM2220 AN,ISB6. 7 CM2250,B4. 5 RGT,ISB CM800,QSB5. 9 44 CM550,B5. 9 G,G3. 9,ISBe4 CM850,ISD6. 7 CM2150,ISD6. 7 CM2150 SN,QSB6. 7 CM2250,QSB3. 9 30 CM550,QSB5. 9 30 CM550,B Gas Plus CM556,B6. 7s,ISB CM2150,ISD4. 5 CM2150 SN,ISB CM850,B LPG

Part Number:

3910992

Application:

For Cummins Engine:4BT,6BT,QSB,4B3.9,B4.5,B5.9,ISB3.9,ISB5.9G,QSB3.9,ISB6.7,ISD4.5,ISB QSB5.9-44,ISD4.5 CM2150,B5.9 LPG Plus CM556,G5.9,ISB 5.9 G CM2180,B4.5s,ISF3.8 CM2220 AN,ISB6.7 CM2250,B4.5 RGT,ISB CM800,QSB5.9-44 CM550,B5.9 G,G3.9,ISBe4 CM850,ISD6.7 CM2150,ISD6.7 CM2150 SN,QSB6.7 CM2250,QSB3.9-30 CM550,QSB5.9-30 CM550,B Gas Plus CM556,B6.7s,ISB CM2150,ISD4.5 CM2150 SN,ISB CM850,B LPG Plus CM556,B4.5,B3.9,ISF2.8 CM2220 AN,ISB6.7 CM2150 SN,QSB6.7 CM850,ISBe4 CM2150,G5.9 CM558,ISB6.7 CM2150 SQ,ISB4.5 CM2150 SN,ISB CM550,QSB5.9 CM850,B Gas International CM556,QSB4.5-30 CM550,ISBe CM800,ISBe5 CM2150 SN,QSB4.5 CM850,B5.9,ISBe CM850

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SKU: 91161486657

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4.0 ★★★★★
Based on 1719 reviews
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Verified Purchase
Stephanie K.
Lowell, US
★★★★★ 5
Would recommend!
Color: White, Size: Queen
I bought this mattress topper for my teenage daughter for her bed. It was on sale when I purchased it and when it arrived I loved the quality and softness of the topper. Great buy for the price! It stays in place and fits as sized. I have yet to launder it, but I would assume it will wash up just fine. My daughter loves it and makes her bed dreamy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
T
Tara Aldridge
Draper, US
★★★★★ 5
Saved me so much money
Im loving this mattress topper. It has added a noticeable layer of comfort to my firm mattress without making it feel too soft. The cushion is plush yet supportive and has made sleeping more comfortable overall. The bamboo feels soft and breathable. It fits on the mattress with the deep pockets and stays in place alk night. Setup was easy and it fluffed up after unpacking. If you have a firm mattress and want extra comfort without replacing it, this topper is a great option. Highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
S
Sophia S.
Pawtucket, US
★★★★★ 5
Comfortable, cooling, and OEKO-TEX certified, it’s a great way to refresh any mattress.
This 3-inch mattress topper instantly upgraded my bed with a softer, cooler, and more supportive feel. The bamboo-viscose fabric is noticeably breathable, helping regulate heat throughout the night—great for hot sleepers. The 1200GSM down-alternative fill adds plush, cloud-like cushioning while still offering balanced support for the back and shoulders. It fits securely with the deep pockets and stays in place even when turning. After allowing it to fully expand, the topper fluffs up beautifully. Comfortable, cooling, and OEKO-TEX certified, it’s a great way to refresh any mattress.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025
L
Leon
Draper, US
★★★★★ 5
Great upgrade for a rental apartment mattress
The mattress in my rental place is firm to the point where it almost feels unfinished. Instead of replacing it, I decided to try adding this topper. It made an immediate difference in the way the bed feels when I sit or lie down. There’s a nice cushioned layer that softens that “flat” feeling but still holds its shape. Another thing I noticed is how breathable it is. I expected thick padding to feel warm, but the airflow here feels better than the original mattress surface. Even after moving around, it never felt heavy or stuffy.
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Reviewed in the United States on November 22, 2025
A
Alexa Young
Chelsea, US
★★★★★ 5
Soft and Comfortable Topper
I got this bamboo mattress topper for a small single bed we keep in our guest room, but I ended up testing it out myself first. The material feels soft and breathable, which is nice because that room can get a little warm in the afternoons. It adds a good amount of cushioning without making the bed too soft. After a couple of nights, my back actually felt better compared to the old mattress alone. I also appreciate that it’s machine washable, because our guest room sometimes doubles as a nap spot for my son after swim class, and spills happen. It dried pretty quickly in the dryer and kept its shape. Overall, it made the bed feel much more comfortable and fresh.
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Reviewed in the United States on November 24, 2025

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