Stihl MSA 190 T Battery Chainsaw — Aftermarket Chain Options

The Stihl MSA 190 T is a battery-powered top-handle chainsaw priced at $349.99 that matches the cutting performance of the MS 194 T gas model. For arborists and tree care professionals, this is a significant milestone — a battery saw that can handle the same work as its gas counterpart without the exhaust, pull-start hassle, or noise restrictions that come with gas saws in residential areas.

But when it comes time to replace the chain, Stihl’s proprietary Oilomatic chain system means you cannot just grab any chain off the shelf. Here is what fits, what does not, and where aftermarket options stand.

Stihl Oilomatic chain: what makes it different

Stihl manufactures their own chain under the Oilomatic brand. These chains feature specific design elements that Stihl claims improve lubrication and reduce friction:

• Oil channel design — Oilomatic chains have channels in the drive links that help distribute bar oil more evenly along the chain and bar
• Cutter geometry — Stihl’s cutter profiles (PM3, PS3, RS, etc.) are designed to match the power curves of specific Stihl saws
• Proprietary sizing — While Stihl chains use standard pitch and gauge measurements, the drive link design is optimized for Stihl bars

For the MSA 190 T, the chain specs are:

• Pitch: 3/8” P (Picco / low profile)
• Gauge: 0.043” (1.1mm)
• Chain type: Stihl Picco Micro 3 (PM3) or equivalent
• Drive link count: Varies by bar length — count your current chain to confirm

The 0.043” gauge is important to note. This is thinner than the 0.050” gauge used by most other chainsaw brands. Using a 0.050” gauge chain on a 0.043” bar will not fit the bar groove, and a 0.043” chain on a 0.050” bar will wobble dangerously.

Aftermarket chains that fit the MSA 190 T

Several aftermarket manufacturers make chains in 3/8” LP pitch and 0.043” gauge that fit Stihl Picco-spec saws:

• Oregon chains — Oregon manufactures chains in 0.043” gauge specifically for Stihl compatibility. Look for Oregon chains designated for Stihl Picco bars. The Oregon 90PX series is a common match.
• Carlton chains — Carlton also produces 3/8” LP, 0.043” gauge chains compatible with Stihl bar mounts.
• Generic/import chains — Budget chains in the correct spec are available, but quality varies significantly. Cheap import chains may have inconsistent cutter angles, softer steel, or loose rivet tolerances.

When ordering any aftermarket chain for the MSA 190 T, verify all three specs:

1. Pitch: 3/8” LP (Picco)
2. Gauge: 0.043”
3. Drive link count: Match your bar length exactly

OEM vs aftermarket: practical differences

Stihl Oilomatic chains are premium-priced, typically $20-$30+ for a top-handle saw chain. Aftermarket alternatives can run $10-$18 for comparable specs. The practical differences:

• Cut quality — A good aftermarket chain (Oregon, Carlton) will cut nearly as well as OEM out of the box. Sharpening technique matters more than brand once the factory edge wears.
• Durability — OEM Stihl chains tend to hold their edge slightly longer, but this advantage shrinks with proper sharpening habits.
• Oil distribution — The Oilomatic channel design may provide marginally better lubrication, but any properly oiled chain on a well-maintained bar will perform fine.
• Warranty concerns — Using an aftermarket chain does not void the saw’s warranty, but chain-related damage claims may be scrutinized more closely.

Battery system note: AK vs AP

The MSA 190 T uses Stihl’s AP battery system (professional grade). This is important because Stihl’s AK system (homeowner grade) uses different batteries that are not cross-compatible with AP tools. If you own both AK and AP Stihl tools, you need separate battery inventories.

The MSA 220 C-B, which offers 250 watts more power than the MSA 190 T, also uses the AP battery system. Batteries are shared between these two saws and other AP-compatible Stihl tools.

What this means for replacement parts

The MSA 190 T uses Stihl’s narrower 0.043” gauge chain — do not order standard 0.050” gauge chains. Aftermarket options from Oregon and Carlton provide reliable, cost-effective alternatives to OEM Oilomatic chain. Always match pitch, gauge, and drive link count before purchasing. Check our catalog for Stihl-compatible 3/8” LP chains in 0.043” gauge that fit the MSA 190 T and similar Picco-bar Stihl saws.