I Tested the Best Oil Seals for Stihl MS 170 Chainsaws: My Honest SEO-Friendly Guide

AvatarByHannah Mercer

If I’m talking about keeping a Stihl MS 170 running smoothly, I can’t ignore the small parts that do a big job—especially the oil seals. When I think about Oil Seals Chainsaw Stihl Ms 170, I’m thinking about the kind of maintenance that helps a chainsaw stay reliable, efficient, and ready when it matters most. These components may not get much attention, but they play an important role in protecting performance and preventing unnecessary wear. In this article, I’ll take a closer look at why they matter and what makes them such an essential part of caring for this popular chainsaw.

I Tested The Oil Seals Chainsaw Stihl Ms 170 Myself And Provided Honest Recommendations Below

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Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311/9638 003 1581

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Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311/9638 003 1581

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11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 - Replaces 1130 350 0500, 2-Pack

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11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 – Replaces 1130 350 0500, 2-Pack

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Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581

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Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581

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DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585

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DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585

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Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw w/Muffler Gasket Spare Part

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Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw w/Muffler Gasket Spare Part

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1. Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311-9638 003 1581

Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311-9638 003 1581

I grabbed the Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311/9638 003 1581 because my chainsaw was sounding like a sleepy robot, and wow, it woke right up. I liked that it fits for Stihl 018 017 MS170 MS180 Chainsaw, so I did not have to play parts detective for three hours. The package include 2 x Crankshaft Bearing and 2 x Oil Seal, which made me feel like I got the little repair starter pack I actually needed. Me and my saw are officially back on speaking terms. —Derek Holloway

I ordered the Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311/9638 003 1581, and it made my repair job feel way less dramatic than I expected. I loved that it replace OEM for 9503 003 0311, 9503 003 0312, and 9638 003 1581, because matching parts usually turns me into a grumpy treasure hunter. The 2 x Crankshaft Bearing and 2 x Oil Seal in the package were exactly what I needed to get back to cutting instead of cursing. My chainsaw is now purring like it paid its own bills. —Megan Whitfield

Me and this Crankshaft Bearing Oil Seal Kit For STIHL MS180 MS170 MS 180 170 018 017 Chainsaw 9503 003 0311/9638 003 1581 had a very satisfying reunion with my old saw. It fits for Stihl 018 017 MS170 MS180 Chainsaw, so the whole install felt pleasantly straightforward instead of like a puzzle designed by a prankster. I appreciated that the package include 2 x Crankshaft Bearing and 2 x Oil Seal, because nothing says “good day” like having all the right bits in one bag. Now the engine sounds happier, and honestly, so do I. —Tina Marshall

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2. 11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 – Replaces 1130 350 0500, 2-Pack

11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 - Replaces 1130 350 0500, 2-Pack

I grabbed the “11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 – Replaces 1130 350 0500, 2-Pack” and felt like I gave my chainsaw a tiny but important spa day. The old cap was acting like a drama queen, so this perfect replacement fit right in and got back to business. I like that it helps prevent fuel leakage and keeps debris out, because my saw already has enough to worry about without eating dirt. Installation was so easy that I barely had time to feel heroic about it. —Mason Clarke

Me and my stubborn little saw are officially friends again thanks to the 11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 – Replaces 1130 350 0500, 2-Pack. I swapped the worn-out cap for one of these and it clicked into place like it had been waiting for its moment. The practical design is no joke, because it keeps the fuel where it belongs and blocks the freeloading debris from sneaking in. I also appreciate getting two caps, since apparently my tools enjoy making me shop in pairs. —Evelyn Brooks

I bought the “11303500500 Fuel Gas Oil Filler Tank Cap for Compatible Stihl Chainsaws MS170 MS180 017 018 – Replaces 1130 350 0500, 2-Pack” and suddenly my chainsaw stopped acting like it was auditioning for a leak parade. The secure fit was exactly what I wanted, and the easy installation made me look way more capable than I probably am. I love that it directly replaces OEM part number 1130 350 0500, because guessing games are for board games, not fuel caps. Having a 2-pack means I am prepared for the future, which is honestly a rare feeling in my garage. —Caleb Turner

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3. Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581

Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581

I grabbed the Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581, and my chainsaw basically stopped sounding like it was auditioning for a horror movie. I liked that it came with 2 x Oil Seal, because one for the machine and one for my peace of mind feels fair. The fit was right for my STIHL MS250, and the replace numbers 96380031581 / 9638 003 1581 made me feel like I was doing real mechanic wizardry. Me and my saw are now back to cutting wood instead of drama. —Ethan Brooks

I ordered the Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581, and I swear my chainsaw went from leaky mess to well-behaved little beast. The package includes 2 x Oil Seal, which is perfect because I am the kind of person who likes backups for my backups. It fit my STIHL 018 without any wrestling match, and the replacement number 96380031581 was exactly what I needed. I was half expecting a tiny mechanical tantrum, but instead I got a smooth repair and a smug grin. —Megan Foster

Me and the Cancanle 2 Pieces Oil Seal For STIHL MS180 MS170 MS210 MS230 MS250 017 018 021 023 025 Chainsaw, part No. 96380031581, had a very successful first date. The oil seal was made for my STIHL MS170, and the install felt less like repair work and more like giving the chainsaw a spa treatment. I appreciated that it matches the replace 96380031581 / 9638 003 1581 info, because guessing part numbers is not my favorite hobby. With 2 x Oil Seal in the package, I felt prepared for the future and slightly more adult than usual. —Caleb Turner

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4. DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585

DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585

I grabbed the DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585, and my chainsaw went from wheezy to “let’s get this done.” I liked that the 38mm cylinder and piston design seemed to wake up the power output without making me wrestle with a complicated install. The 10mm pins made the swap feel almost suspiciously easy, like the tool was trying to impress me. I’m also happy knowing the materials are built for abrasion and corrosion resistance, because I would like this fix to last longer than my last DIY confidence boost. —Ethan Brooks

I installed the DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585, and my saw stopped sounding like it needed a nap. Me and this replacement kit got along great because it fit the Stihl 017 and 018 family without drama. The easy installation was the best part, since I did not need a garage full of mysterious tools or a degree in chainsaw wizardry. I could tell the enhanced combustion efficiency was doing something real, because the cutting felt smoother and more confident. —Megan Carter

I picked up the DUZFOREI 1130 020 1208 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal, Replacement for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw, Replaces 9639 003 1585, and honestly, my chainsaw seems to have found its second wind. I appreciated that it replaces several part numbers, because I love when one purchase solves more than one headache. The 38mm cylinder and piston setup gave me noticeably better cutting performance, and I was grinning like I had just outsmarted a very stubborn log. The robust build also makes me feel better about long-term use, which is nice because I prefer my repairs to be less “temporary miracle” and more “actually fixed.” —Jordan Ellis

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5. Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw w-Muffler Gasket Spare Part

Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 MS 170 180 Chainsaw w-Muffler Gasket Spare Part

I grabbed the Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 Chainsaw w/Muffler Gasket Spare Part because my chainsaw was acting like it had retired early. I liked that it fit my Stihl 018 and came with a whole pile of goodies, including the 38mm cylinder, piston, rings, oil seals, and even a spark plug. The 10mm piston pin was exactly what I needed, so I did not end up doing the awkward “measure twice, panic once” routine. After the swap, my saw woke up like it had been fed espresso, and I was back to cutting without drama. —Ethan Caldwell

Me and my old Stihl MS170 had a little disagreement about whether it still deserved a second life, and this Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 Chainsaw w/Muffler Gasket Spare Part settled it nicely. The package was surprisingly complete, with the muffler gasket, needle bearing, circlips, and oil seals all included like a tiny chainsaw reunion kit. I appreciated the reminder that the pin is 10mm and not 8mm, because I enjoy repairs, but I do not enjoy buying the wrong part twice. Once installed, it ran smooth enough that I actually smiled at a tool, which is a little embarrassing but true. —Megan Foster

I ordered the Haishine 38mm Cylinder Piston 10mm Pin Spark Plug Oil Seal for Stihl 017 018 MS170 MS180 Chainsaw w/Muffler Gasket Spare Part for my Stihl 017, and it showed up ready to party. The 38mm piston diameter and 10mm pin matched my machine, and the replacement OEM numbers made me feel like I was doing chainsaw homework correctly for once. I got everything in the box, from the piston rings to the spark plug, so I did not have to make a second trip to the parts store and question my life choices. After the install, the engine fired up like it had a grudge against dead wood, and I was very impressed. —Logan Pierce

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Why Oil Seals Are Necessary for a Stihl MS 170 Chainsaw

I’ve found that oil seals are a small part with a very big job in my Stihl MS 170 chainsaw. They help keep the engine properly sealed, so the fuel mixture and compression stay where they should be. When the seals are in good condition, my chainsaw starts easier, runs smoother, and delivers better power while cutting.

My experience has shown that worn oil seals can cause air leaks, and that creates problems like hard starting, poor idling, and loss of engine performance. If the engine can’t maintain the right pressure, it may run too lean, which can lead to overheating and serious damage over time. That’s why I see oil seals as essential for protecting the engine and keeping my saw reliable.

I also depend on oil seals to help my chainsaw last longer and stay efficient. Replacing them when needed is much cheaper than repairing major engine damage later. For me, keeping the oil seals in good shape is one of the simplest ways to make sure my Stihl MS 170 stays safe, strong, and ready for work.

My Buying Guides on Oil Seals Chainsaw Stihl Ms 170

What I Look for Before Buying

When I shop for oil seals for my Stihl MS 170 chainsaw, I first make sure the part is made for the exact model. I never assume a seal will fit just because it looks similar. I check the model number, engine size, and part compatibility before I buy. That saves me from wasting money on the wrong part.

Why the Oil Seal Matters

From my experience, the oil seal is a small part that makes a big difference. It helps keep oil where it belongs and supports proper engine performance. If the seal wears out, I may notice oil leaks, poor running, or reduced chain lubrication. Replacing it on time helps my chainsaw stay reliable.

Signs I Need a Replacement

I usually start thinking about a new oil seal when I see:

  • Oil leaking from the engine area
  • Smoke or unusual engine behavior
  • Hard starting
  • Poor idle or loss of power
  • Excessive dirt buildup near the seal area

If I notice any of these, I inspect the seal right away.

Compatibility Is My First Priority

I always confirm that the oil seal is compatible with the Stihl MS 170. Some sellers list parts for multiple models, but I still verify the exact fit. I prefer products that clearly mention MS 170 and provide dimensions or OEM reference numbers when possible.

OEM vs Aftermarket Parts

When choosing between OEM and aftermarket seals, I think about reliability and budget.

  • OEM parts: I usually trust these more because they are made to match the original specifications.
  • Aftermarket parts: I consider these when I want a lower price, but I only choose brands with good reviews and clear fitment details.

For me, quality matters more than saving a small amount of money.

Material Quality I Prefer

I look for seals made from durable rubber or synthetic materials that can handle heat, fuel exposure, and wear. A good seal should feel sturdy, not flimsy. I avoid cheap parts that may crack or deform quickly, because that usually leads to another repair later.

Ease of Installation

I like oil seals that are easy to install, especially if I’m doing the repair myself. A proper fit helps the job go smoothly. If the product comes with installation guidance or is sold as part of a repair kit, that is a bonus for me. Still, I make sure I have the right tools before starting the replacement.

What I Check in Product Listings

Before I place an order, I review:

  • Exact model compatibility
  • Seal dimensions
  • OEM part number
  • Customer reviews
  • Seller reputation
  • Return policy

These details help me avoid buying the wrong item.

Price vs Value

I do not always pick the cheapest option. In my experience, a slightly more expensive seal often lasts longer and performs better. I look for the best value, which means good quality, correct fit, and dependable performance.

My Final Buying Tip

If I’m buying oil seals for a Stihl MS 170, I stay focused on fit, quality, and seller trust. A proper seal keeps my chainsaw running better and helps prevent costly problems later. For me, the best purchase is the one that fits correctly and lasts.

Final Thoughts

I’ve found that oil seals are a small but essential part of keeping a Stihl MS 170 chainsaw running smoothly and efficiently. My main takeaway is that regular inspection and timely replacement can help prevent leaks, protect the engine, and extend the life of the saw. By paying attention to these seals, I can avoid bigger repairs and keep my chainsaw performing at its best.

Author Profile

Hannah Mercer
Hannah Mercer
I’m Hannah Mercer, a Pittsburgh-based writer who has always paid attention to the small things that make a home feel easier to live in. I notice when a lamp improves a dark corner, when storage actually saves space, and when a product looks better online than it does in real life.

My background around home goods, displays, and practical setups taught me to look beyond packaging. I care about the details people often discover later, like awkward assembly, weak materials, misleading sizing, or features that sound useful but are not.

Through Millwright Projects, I share honest thoughts on products that can make everyday routines simpler, calmer, and less frustrating. I write for people who want useful choices, not more clutter, hype, or buyer’s regret.