Fits 3 Key Series：Perfectly compatible with 294440, 294442, and 294446 series (e.g., 294440-0414-01, 294442-0102-01). Original Specs Match：Follows 0.25×0.25×5.50 inches dimensions to ensure proper engine function. Brand-New & Unused：Comes in sealed original packaging — no wear, no damage. Easy DIY Installation：Takes minutes with basic tools; no professional skills required. Trusted After-Sale：Backed by 30-day free returns, so you can buy with confidence.