Current Lead Times: In Stock Engines Ship Same or Next Day - Out of Stock: 1-3 Weeks on Most Long Block Engines; 3-5 Days on Heads – *call us for more exact lead times for your specific build
Protect your 1989–1993 5.9 Cummins Marine engine with premium-grade fluids and filters engineered for harsh marine duty. Our high-zinc 15W-40 marine diesel oil ensures superior lubrication under load and heat. Fleetguard oil and fuel filters deliver maximum filtration and reliability, preserving injectors and turbo performance. Marine-grade extended-life coolant with proper SCA additives defends against liner pitting and scale buildup.
Stock up now—extend engine life and dominate the water with every start.
Building engines the way the OEM factory should have in the first place.
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