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Orders received during this time will be processed when we resume normal business hours on Tuesday, July 5th!

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Oil - Engine - Catalyst Marine Engine Oil 25W-40 Five Quart Jug 18-9400CAT-4

$43.05 $47.99

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...

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