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Description
4237 034 3001 Piston Ring Ø34 x 1.2 mm | Genuine STIHL OEM Replacement
The 4237 034 3001 Piston Ring is a genuine STIHL OEM replacement component designed for compatible STIHL 2-cycle engines. This 34 mm × 1.2 mm piston ring forms the sealing interface between the piston and cylinder, helping maintain engine compression and efficient combustion. STIHL parts documentation identifies 4237 034 3001 as a piston ring Ø34 × 1.2 mm.
Features That Make a Difference
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Genuine STIHL OEM replacement part
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Part Number: 4237 034 3001
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Alternate Part Number: 42370343001
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Product Type: Piston Ring / Compression Ring
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Size: Ø34 × 1.2 mm
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Designed for compatible STIHL 2-cycle engines.
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Helps maintain proper piston-to-cylinder sealing.
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Manufactured to STIHL specifications for correct fit and engine performance.
Benefits
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Helps restore lost engine compression.
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Replaces a worn, damaged, or broken piston ring.
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Helps improve starting performance and engine power when compression has deteriorated.
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Supports proper combustion and efficient engine operation.
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OEM design helps provide the correct fit and sealing characteristics.
Specifications
| Specification | Details |
|---|---|
| Part Number | 4237 034 3001 |
| Alternate Part Number | 42370343001 |
| Product Type | Piston Ring |
| Brand | STIHL |
| Diameter | 34 mm |
| Ring Thickness | 1.2 mm |
| Function | Compression / Cylinder Sealing |
| Engine Type | Compatible STIHL 2-Cycle Engines |
| Use | Engine Repair / Replacement |
| Part Type | Genuine OEM Replacement |
STIHL parts lists specifically identify this part as Piston Ring Ø34 × 1.2 mm. For example, the MS 151 C-E parts documentation lists one 4237 034 3001 ring with the 34 mm piston, while the SR 200 documentation lists two rings for the applicable piston assembly.
Compatibility
The 4237 034 3001 Piston Ring is used on a wide range of STIHL equipment, including:
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HS 82 R
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HS 82 T
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HS 87 R
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HS 87 T
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SH 56 C-E
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SH 86 C-E
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BG 56 C-E
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BG 86
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BG 86 C-E
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BR 200
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SR 200
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MM 56 C-E Yard Boss
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MS 151 C-E
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MS 151 TC-E
Parts references confirm the 34 × 1.2 mm ring in applications including the BG 56, BG 86, BR 200, HS 82, HS 87, SH 56, SH 86, SR 200, MM 56, and MS 151.
Important: The required quantity can vary by engine configuration. For example, STIHL documentation shows one ring on some 34 mm piston assemblies and two rings on certain SR 200 and earlier BG 56 configurations. Always verify your exact model, serial number, and piston configuration before ordering.
Why Replace the Piston Ring?
A worn piston ring can allow combustion gases to escape past the piston, reducing cylinder compression. This may result in difficult starting, reduced power, poor performance, or increased engine wear.
Replacing the piston ring during an appropriate top-end repair can help restore the piston-to-cylinder seal and proper engine compression.
Why Buy from Barry’s Power Equipment?
Barry’s Power Equipment provides quality OEM and replacement parts for lawn and outdoor power equipment.
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Genuine OEM replacement parts
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Quality products for residential and commercial equipment
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Competitive Pricing
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Fast Shipping
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Expert Customer Support
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Reliable parts for engine repair and maintenance
Restore proper compression and performance in your compatible STIHL equipment with the STIHL 4237 034 3001 Piston Ring Ø34 × 1.2 mm, a genuine OEM replacement designed for reliable engine service
