Oil - Engine - Catalyst Marine Engine Oil 25W-40 Five Quart Jug 18-9400CAT-4
$52.87
Competitor Price:
$57.69
Sierra's Premium Blend 25W-40 catalyst engine oil is specially formulated to meet the needs of 4-stroke marine engines with catalyst emission systems.
- Sierra premium blend catalyst compatible inboard engine oil
- SAE 25W-40
- 5 quart jug
- Recommended for use with inboard and I/O marine engines with catalyst exhaust systems
- Meets the requirements of modern 4-stroke recreational engines with or without emission catalyst systems
- Developed specifically for the marine environment and the high running stresses marine engines encounter
- Protects internal engine components from rust, corrosion, and from sticking piston rings
- Premium blend features high detergency, anti-oxidants, and antiwear proprties
- ZDDP anti-wear additive prevents phosphorus depletion and extends the emission catalyst life
- Exceeds all 4-stroke requirements including FC-W and FC-W Cat compatible
- NMMA FC-W certified
- Replaces Bel-Ray 99730-BT4
Most in-stock orders ship within 24 hours. Orders placed by 1:00 PM EST typically ship the same business day, subject to availability.
Average delivery time within the Continental U.S. is 3–7 business days.
Expedited shipping options are available on select products. Weekend delivery is not available.
Oversized items, drop-shipped products, and shipments to Alaska, Hawaii, or international destinations may require additional time or shipping costs.
Tracking information is emailed once your order ships.