6818248 Arm Cylinder Seal Kit for Bobcat 337G / 337WG / 341G Excavators
Note on numbering: 6818248 is the Bobcat cylinder assembly number for the arm cylinder on the 337G / 337WG / 341G compact excavators. Aftermarket suppliers list the reseal kit for this cylinder under 6817081 (TheORingStore, HydraulicCylindersInc, ReliableAftermarketParts). This listing uses 6818248 as the reference for the arm cylinder reseal kit — if your records show 6817081, it is the same application.
The arm (dipper) cylinder positions the stick under constant digging and breakout loads, so worn seals show up as external leakage, slow arm response, or loss of breakout force. A complete reseal kit for this cylinder typically contains piston seal, rod seal, wiper, O-rings and backup rings; confirm the exact contents with our sales team at [email protected] when ordering.
Materials: the kit uses hydraulic sealing compounds selected for compact excavator duty. Exact grades (polyurethane / NBR / PTFE types) are confirmed per batch — request the material data sheet with your order.
Verified Specs
| Parameter | Value / Verification |
| Reference Number | 6818248 (cylinder assembly); kit cross-ref 6817081 — TheORingStore, HydraulicCylindersInc |
| Brand / Machine | Bobcat compact excavator — Multiple suppliers |
| Models | 337G / 337WG / 341G — TheORingStore, HydraulicCylindersInc, ReliableAftermarketParts |
| Application | Arm (dipper) cylinder — Multiple suppliers |
| Rod Diameter | 2-1/4″ (57.2 mm) — TheORingStore, HydraulicCylindersInc |
| Bore Diameter | 3-1/2″ (88.9 mm) — TheORingStore, HydraulicCylindersInc |
| Condition | New, aftermarket replacement — Multiple suppliers |
Confirmed / Reference Fitment
•Confirmed: Bobcat 337G — arm (cylinder 6818248) — TheORingStore; 337WG — arm — HydraulicCylindersInc; 341G — arm — HydraulicCylindersInc, ReliableAftermarketParts.
•Reference: 6817081 kit number used by multiple aftermarket suppliers for this cylinder.
Fitment Checklist
1.Machine model: Bobcat 337G, 337WG or 341G (confirm full model designation).
2.Cylinder position: Arm (this kit does not cover boom or bucket cylinders).
3.Measure: rod ≈ 2-1/4″ (57 mm), bore ≈ 3-1/2″ (89 mm).
4.Look for the cylinder P/N 6818248 (or kit P/N 6817081) on your records.
5.Note the machine S/N — send it with your order for a fitment double-check.
When to Inspect / Replace
•Oil film or drips at the arm cylinder gland.
•Slow or jerky arm movement, loss of breakout/curl force.
•Visible scoring or rust on the rod.
•Contaminated or milky hydraulic oil.
Always check rod straightness and bushings before resealing — worn guides will damage new seals quickly.
Wholesale & MOQ
Factory-direct supply for distributors, repair shops and fleet operators. Wholesale MOQ: 5 kits. Email [email protected] with your quantity, shipping port and destination for a same-day quote. Custom packaging and private labeling available.
FAQ
Why do other suppliers sell this as 6817081? — 6818248 is the Bobcat cylinder assembly number; the reseal kit for that cylinder is commonly listed as 6817081 by aftermarket suppliers. Both refer to the same arm cylinder reseal application.
Does this kit fit the 337G, 337WG and 341G? — Yes — arm cylinder on all three models per multiple independent catalogs. Verify rod 2-1/4″ × bore 3-1/2″ on your cylinder before ordering.
Do you supply kits for the other cylinders on these machines? — Yes (boom, bucket, etc.). Send your machine S/N and cylinder positions to [email protected] for the correct part numbers.
Bobcat 337G seal kit
6818248
Bobcat arm cylinder seal kit
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