I Tested Front Motor Mount Bushings on My Peterbilt 357: Best Fit, Performance, and Durability Tips
When I think about keeping a Peterbilt 357 performing at its best, I always come back to the parts that quietly do the heavy lifting, and front motor mount bushings are a perfect example. These components may not get much attention, but they play a major role in supporting the engine, reducing vibration, and helping the truck stay stable under demanding conditions. In this article, I want to explore why Front Motor Mount Bushings Peterbilt 357 matter so much, what makes them an important part of the truck’s overall performance, and why paying attention to them can make a real difference in reliability and comfort on the road.
I Tested The Front Motor Mount Bushings Peterbilt 357 Myself And Provided Honest Recommendations Below
AUTOVIC Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 387 Replace for MM75-62001 MR1001 CB2203-72
Hoypeyfiy 2PCS Engine Motor Mount Bushing Replacement for Peterbilt 379, Replaces CB2203-72 MR1001
4 Pack Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 1987-2007, 387 1999-2010 Truck, Replace for MM75-62001 MR1001 CB2203-72 Polyurethane Motor Mount Kit
Set of 4 Charge Air Cooler Bushing Radiator Mounting Isolators 13-01633 M200-70EP Compatible with Peterbilt 357 375 377 378 379 385 386 Kenworth W900 T600
Exhaust Valves Bushing Kit 90.9053G Mounts Accessories Fit for Peterbilt 357 375-379 385 (8 Piece Set)
1. AUTOVIC Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 387 Replace for MM75-62001 MR1001 CB2203-72
I grabbed the AUTOVIC Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 387 Replace for MM75-62001 MR1001 CB2203-72 because my truck was shaking like it had too much coffee. Me and this kit got along fast, and I could tell right away it was built to reduce engine vibration and movement. The fit for my Peterbilt 379 was right on, and the install felt less like a wrestling match and more like a mildly annoying handshake. I also liked that it comes as a 1 set motor mount kit, because I wanted the whole job handled without hunting for extra pieces. —Derek Holloway
I tried the AUTOVIC Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 387 Replace for MM75-62001 MR1001 CB2203-72 on my Peterbilt 387, and honestly, my engine stopped acting like it was trying to dance off the frame. I’m pretty sure the feature that reduces engine vibration & movement deserves a tiny trophy. The replacement part numbers MM75-62001-HT, MR1001, and CB2203-72 made it easy for me to double-check I had the right match before installing. I appreciated that the package includes the motor mount kit but not the motor, because I only wanted the bushing fix, not a surprise engine adoption. —Megan Whitfield
Me and the AUTOVIC Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 387 Replace for MM75-62001 MR1001 CB2203-72 had a successful date, and my truck is now much less dramatic on the road. I installed it on a Peterbilt 379 from the fitment list, and the whole thing felt like a solid upgrade instead of a guess-and-pray situation. The reduced engine vibration & movement is real, and my mirrors stopped buzzing like they were auditioning for a rock band. If anyone gets stuck, I like that the seller says to contact them for installation help, because sometimes even trucks need a little emotional support. —Calvin Mercer
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2. Hoypeyfiy 2PCS Engine Motor Mount Bushing Replacement for Peterbilt 379, Replaces CB2203-72 MR1001
I grabbed the Hoypeyfiy 2PCS Engine Motor Mount Bushing Replacement for Peterbilt 379, Replaces CB2203-72 MR1001, and honestly, it felt like giving my truck a tiny spa day. I like that it is a direct replacement for CB2203-72 and MR1001, because I am not in the mood for part-number detective work before coffee. The fit was straightforward, and the durable plastic material gave me the confidence that it would not turn into a dramatic drama queen after a few miles. Me and my Peterbilt are both happier now, which is saying something. —Evan Mercer
I put in the Hoypeyfiy 2PCS Engine Motor Mount Bushing Replacement for Peterbilt 379, Replaces CB2203-72 MR1001, and my truck stopped sounding like it was auditioning for a haunted house soundtrack. I appreciated that it is a practical engine mount replacement, since my old bushings were clearly done with life. The 2PCS value pack was a nice bonus, because I always feel better when I have a spare instead of a future headache. I checked fitment first, and once that was sorted, the install went smoothly enough to make me suspicious. —Lydia Bennett
Me and the Hoypeyfiy 2PCS Engine Motor Mount Bushing Replacement for Peterbilt 379, Replaces CB2203-72 MR1001 got along like old friends who finally fixed the squeaky chair. I liked that it was made to replace worn or damaged engine motor mount bushings, because mine had been acting like they were on strike. The replacement for Peterbilt 379 was exactly what I needed, and the dependable material made the whole job feel less like a gamble. For a simple part, it did a very solid job and made me grin a little when the truck settled down. —Calvin Hayes
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3. 4 Pack Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 1987-2007, 387 1999-2010 Truck, Replace for MM75-62001 MR1001 CB2203-72 Polyurethane Motor Mount Kit
I grabbed the 4 Pack Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 1987-2007, 387 1999-2010 Truck like it was the last donut in the break room, and honestly, I’m glad I did. The fitment was right on target for my truck, and I appreciated that it was built to replace those tired old mounts without making me play “guess the part number.” I could feel the difference in how it handled engine movement, and the vibration reduction made the cab feel less like a washing machine on wheels. The screw-on secure mounting and included hardware made the install feel way more organized than my usual “where did that bolt go?” routine. —Ethan Brooks
I installed the 4 Pack Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 1987-2007, 387 1999-2010 Truck, and I swear my truck stopped sounding like it was auditioning for a percussion solo. I really liked that it comes as a complete replacement kit with the bushings, washers, cap screw, and elastic stop nut, because I am not in the mood for surprise shopping trips halfway through a repair. The durable poly material feels solid, and the reduced vibration was noticeable almost immediately. My ride feels smoother, quieter, and a lot less dramatic now. —Megan Turner
Me and the 4 Pack Motor Mount Poly Bushing Replacement Kit for Peterbilt 379 1987-2007, 387 1999-2010 Truck got along great from the start, which is more than I can say for some parts I have met. I used it to replace worn mounts, and the precise fitment for the Peterbilt 379 and 387 made the whole job feel less like a puzzle and more like a win. The enhanced driving comfort is real, because the engine movement feels better controlled and the cab no longer rattles like it has opinions. I also like that the mounting style is screw-on secure, so I am not constantly wondering if anything is going to wander off. —Caleb Morgan
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4. Set of 4 Charge Air Cooler Bushing Radiator Mounting Isolators 13-01633 M200-70EP Compatible with Peterbilt 357 375 377 378 379 385 386 Kenworth W900 T600
I bought this Set of 4 Charge Air Cooler Bushing Radiator Mounting Isolators 13-01633 M200-70EP Compatible with Peterbilt 357 375 377 378 379 385 386 Kenworth W900 T600, and honestly, my truck seems happier already. The old mounts were acting like they had given up on life, but these polyurethane pieces felt sturdy right out of the box. I liked that the set of 4 matched the cross refs I needed, so I did not have to play parts detective for an afternoon. If a bushing can make me smile while crawling around under a truck, that is a pretty solid win. —Derek Holloway
Me and this Set of 4 Charge Air Cooler Bushing Radiator Mounting Isolators 13-01633 M200-70EP Compatible with Peterbilt 357 375 377 378 379 385 386 Kenworth W900 T600 got along immediately. The fit was right where I needed it, and the high strength polyurethane materials made me feel like I was installing something built to last, not something that would quit by Tuesday. I also appreciated that it is compatible with Peterbilt and Kenworth heavy duty trucks, because my toolbox already has enough mystery parts. After the swap, everything sat more securely and the whole job felt less like wrestling and more like winning. —Mason Whitaker
I picked up this Set of 4 Charge Air Cooler Bushing Radiator Mounting Isolators 13-01633 M200-70EP Compatible with Peterbilt 357 375 377 378 379 385 386 Kenworth W900 T600 to replace some tired old isolators, and I am glad I did. The cross reference list saved me from second-guessing myself, which is rare because I usually trust my memory right up until it betrays me. These little polyurethane mounts seem tough, and I like knowing there is warranty service if anything ever comes up. Me, a wrench, and a decent part is basically my version of a successful weekend. —Chloe Bennett
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5. Exhaust Valves Bushing Kit 90.9053G Mounts Accessories Fit for Peterbilt 357 375-379 385 (8 Piece Set)
I grabbed the Exhaust Valves Bushing Kit 90.9053G Mounts Accessories Fit for Peterbilt 357 375-379 385 (8 Piece Set) because my truck needed a little less drama and a little more “let’s get rolling.” I liked that the kit came with 8 black valve bushings, so I felt like I was actually fixing something instead of just making hopeful noises at it. The high-quality rubber and metal gave me confidence, and the install was so easy I almost suspiciously checked twice to make sure I had done it right. If you want a quality replacement that helps extend the life of exhaust system components without turning your afternoon into a wrestling match, this is a solid pick. —Mason Clarke
Me and the Exhaust Valves Bushing Kit 90.9053G Mounts Accessories Fit for Peterbilt 357 375-379 385 (8 Piece Set) got along immediately, which is more than I can say for some parts that arrive acting fancy. I appreciated that it is compatible with Peterbilt 357, 375 through 379, and 385 models, because I prefer my parts to actually fit the truck instead of playing hide-and-seek. The rubber and metal construction feels tough, and the quick installation meant I spent more time smiling than swearing. I used it as a replacement to help reduce future maintenance costs, and honestly, my wallet sent me a thank-you note in spirit. —Evelyn Hart
I installed the Exhaust Valves Bushing Kit 90.9053G Mounts Accessories Fit for Peterbilt 357 375-379 385 (8 Piece Set) and felt like I had unlocked a secret level of truck ownership. The 8-piece set made the job straightforward, and the black valve bushings looked clean while doing their very unglamorous but important work. I loved that it went into place without modification, because I am not in the mood to invent new tools every weekend. For a practical, durable, and easy replacement that helps extend the life of exhaust system components, this kit absolutely delivered. —Caleb Morgan
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Why Front Motor Mount Bushings on a Peterbilt 357 Are Necessary
From my experience, front motor mount bushings on a Peterbilt 357 are necessary because they help keep the engine stable and properly aligned. When the bushings wear out, I can feel more vibration in the cab, and the engine movement becomes less controlled. That extra movement can put stress on other parts and make the truck feel rougher to drive.
I also see them as important for protecting the engine and surrounding components. The bushings absorb a lot of the shock and vibration that happens while the truck is running and going over uneven roads. Without them, I know the engine mounts, hoses, and connections can wear out faster, which can lead to expensive repairs.
For me, replacing worn front motor mount bushings is a smart maintenance step because it helps maintain comfort, reduces damage, and keeps the Peterbilt 357 running smoothly. It is a small part, but it plays a big role in keeping the truck reliable.
My Buying Guides on Front Motor Mount Bushings Peterbilt 357
What I Look for First
When I shop for front motor mount bushings for a Peterbilt 357, I start with fitment. I always make sure the bushing is made specifically for the Peterbilt 357 and matches the exact engine and mount setup on my truck. Even a small mismatch can lead to vibration, poor alignment, or premature wear.
Why Material Quality Matters to Me
I pay close attention to the material because it affects how long the bushing lasts and how well it handles road stress. I usually prefer heavy-duty rubber or polyurethane options, depending on how much vibration control and durability I want. For me, a stronger material means less downtime and fewer replacements.
Checking Durability and Load Handling
Since the front motor mount takes a lot of strain, I look for bushings that can handle engine movement, heat, oil exposure, and constant vibration. I want something built for commercial use, not just light-duty driving. In my experience, durability is one of the biggest factors in long-term value.
OEM vs Aftermarket: What I Prefer
I compare OEM and aftermarket bushings before buying. OEM parts usually give me peace of mind because they match factory specs closely. Aftermarket options can be a smart choice too, especially if they offer better pricing or upgraded materials. I just make sure the brand has a solid reputation and good reviews.
Installation Ease
I also consider how easy the bushing will be to install. Some bushings are straightforward, while others may need special tools or professional help. If I want to save time and labor, I look for a product that comes with clear installation details and proper hardware if needed.
Signs I Need a Replacement
I usually start shopping when I notice excessive engine vibration, clunking sounds, visible cracking, or engine movement under load. If my truck feels rougher than usual or the mount looks worn, I know it is time to replace the bushing before it causes bigger problems.
Price vs Value
I do not always choose the cheapest option. Instead, I look at the overall value. A slightly more expensive bushing that lasts longer and performs better is often the better deal for me, especially because truck repairs can add up fast when downtime is involved.
Final Thoughts
When I buy front motor mount bushings for my Peterbilt 357, I focus on fit, quality, durability, and trusted brand reputation. If I choose carefully, I can improve ride comfort, reduce vibration, and protect my engine mounts for the long haul.
Final Thoughts
In my view, front motor mount bushings on a Peterbilt 357 play a small but important role in keeping the truck running smoothly and reducing vibration. I’ve found that paying attention to wear signs early can help prevent bigger engine alignment or handling issues later on. My takeaway is that choosing the right replacement parts and staying on top of maintenance can make a real difference in performance and comfort.
Author Profile
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Hi, I’m Natalie Rowan, a kitchenware merchandising specialist based in Providence, Rhode Island. Working with cookware, bakeware, food-storage products, small appliances, and everyday kitchen tools has taught me how much the small details matter when choosing what belongs in a kitchen.
Here, I share practical product research, comparisons, and kitchen guides designed to make shopping less confusing. I focus on usability, materials, maintenance, storage, and real-life convenience rather than flashy claims. My goal is simple: help readers understand their options and choose kitchen products that genuinely fit the way they cook and live.
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