Exmark Engine Oil 3 Quarts and Filter Kit Quest Radius E S Series 135-2566 126-5234

What It Is

This is an OEM Exmark maintenance kit containing three quarts of Exmark Premium Engine Oil (SAE 10W-30) and an oil filter, designed specifically for the 60-minute oil change on Quest, Radius, and E-Series mowers.

Fitment & Compatibility

Required models: Quest (all variants), Radius (S, E, X-Series), and E-Series (E-S, E-X). Not for Lazer Z, Turf Tracer, or other Exmark commercial zero-turns.

Check before buying:

• Engine type: Fits Kawasaki FS, FX, and FR engines (common on these models). Does not fit Kohler or Briggs & Stratton engines.
• Deck size: Works with 42", 48", 50", 52", and 60" decks, but verify your engine’s oil capacity (3 quarts is correct for most, but some smaller engines take 2 quarts).
• Part numbers: OEM kit #135-2566 (filter #126-5234). Aftermarket filters may fit but void warranty—stick with OEM for these models.
• Year range: 2012–2022 production years. Check your serial number plate on the frame (near the engine) to confirm.

Key Things to Know

• Installation difficulty: Easy (15–30 minutes). Requires a 15mm socket for the drain plug and a filter wrench (Exmark #103-4395 or equivalent).
• Oil type: Exmark Premium 10W-30 is synthetic blend. Do not substitute with conventional oil—these engines need the high-temp stability for hydrostatic drives.
• Common gotcha: The filter is spin-on but has a specific torque spec (18–20 ft-lbs). Hand-tighten then 3/4 turn with a wrench—over-tightening cracks the housing.
• Quantity: Kit includes exactly 3 quarts. If your engine takes less (e.g., 2.5 quarts), save the leftover for top-offs. Do not overfill—check dipstick after running 30 seconds.

Should You Buy It

Yes, if you own a Quest, Radius, or E-Series with a Kawasaki engine and want a no-guesswork oil change. The OEM kit saves hunting for the correct filter and oil, and the 4.7-star rating reflects consistent fit and performance. Skip it if you’re comfortable mixing aftermarket oil/filter—but for warranty or simplicity, this is the right call.