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Ten small metal worm gear pinions with .325 inch 7 tooth profile

LAHDEK

LAHDEK Worm Gear Pinion 10pcs .325" 7T Husqvarna 346 351 353 503892102 503892103

SKU CH-FPT9-0H4H3

Ten-pack of .325" 7-tooth worm gear pinions replaces OEM 503892102 and 503892103 on Husqvarna 346, 351 and 353 chainsaws

  • Ready-to-install pack of ten .325" 7-tooth pinions
  • Direct replacement for OEM 503892102 and 503892103
  • Fits Husqvarna 346 XP, 351 and 353 chainsaws
  • Drives both clutch drum and oil pump assemblies
  • New condition, petrol-engine compatible

Ten-pack Worm Gear Pinion

This ten-piece set supplies the .325" 7-tooth worm gear pinion used on Husqvarna 346 XP, 351 and 353 chainsaws. It replaces OEM parts 503892102 and 503892103 on models built between 1999 and 2007. Professional saw operators and repair shops can keep multiple units on hand for scheduled clutch-drum or oil-pump servicing.

Bulk quantity reduces downtime

Having ten identical pinions in one package means a workshop can complete several overhauls without reordering. Each pinion is a direct substitute for the original component, so the clutch assembly, drum and oiler regain factory-spec engagement. The multi-pack suits high-volume maintenance where single-unit purchases would add administrative overhead.

Straightforward press-fit installation

The pinion seats onto the existing shaft without special tooling; a standard bench press or careful mallet work aligns the splines. The most common issue is debris in the clutch housing that prevents full seating, so clean the bore thoroughly before fitting. Verify the .325" pitch matches the chain before final assembly to avoid premature wear.

How it compares

Measured against everything we stock in Small Engines & Engine Parts, at today’s prices. Recalculated every night.

Price $24.99
Cheaper than about 80% of the 501 comparable items (median $28.99).

Specifications

No published specifications for this item yet.

Questions about this item

How often will the .325" 7-tooth worm gear pinion need replacing on a 346 XP chainsaw?

The pinion is a wear item driven by the clutch drum; inspect it each time the chain is sharpened and replace if teeth show rounding or the oil-pump drive slot is worn.

What fails first on the pinion during a long cutting session?

The 7-tooth profile and .325" pitch limit torque transfer; sustained high-RPM cuts will round the tooth tips before the steel body yields.

Does the pinion add noticeable noise or heat when the saw runs all day?

The pinion itself runs inside the clutch drum and adds no measurable noise or heat; any increase comes from the clutch or engine, not this gear.

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