VIF Jason Marine Upgrade OEM 13 Spline Tooth Aluminum Outboa

The Verdict

If you’re running a 40–115 HP outboard and you’ve been paying $150+ for OEM propellers, the VIF Jason Marine 13-spline aluminum prop is the kind of product that makes you wonder why you waited so long. This isn’t a no-name knockoff — it’s a precision-machined replacement that matches factory specs for Yamaha, Mercury, Suzuki, and Tohatsu gearcases, and at roughly half the price of dealer parts, it’s earned its 4.6-star rating across 229 verified purchases.

What’s Actually in the Box

The package includes the propeller itself, a replacement hub kit with the 13-spline insert, thrust washer, and the necessary hardware. That hub kit matters — it’s the part that wears out and costs $30–40 separately at a marine dealer. As one buyer put it, “The hub kit alone is worth the price of the whole prop.” You also get a detailed fitment chart printed on the box, which saves you the headache of cross-referencing spline counts and gearcase models online.

Performance and Build Quality

The 13-spline hub is machined to OEM tolerances, so it slides onto the shaft with the same snug fit as factory parts. The aluminum alloy is aircraft-grade 5083, which is lighter than stainless steel — that translates to quicker hole shots and less rotational mass on mid-range engines. During testing, the prop tracked straight at WOT with minimal ventilation, even in tight turns.

The blades are CNC-balanced, which you’ll notice in the absence of vibration at cruising speed. For a $60–80 prop, the finish quality is surprisingly good: no casting flash, no burrs on the blade edges, and the paint holds up better than most budget props I’ve tested. One Amazon reviewer noted, “Bolt pattern matched my Mercury 90 exactly — no filing, no shimming, just bolted on and went.”

Where It Falls Short

Let’s be direct about the tradeoffs. Aluminum is softer than stainless, so if you run in shallow water with rocky bottoms or submerged timber, you’ll ding the blades. That’s not a defect — it’s physics. The prop is designed to sacrifice itself to protect your lower unit, which is exactly what you want in a budget prop.

The other limitation is pitch selection. VIF offers the standard sizes (13.25x17, 13.75x15, etc.), but if you need a custom pitch for a heavily loaded boat or high-altitude running, you’ll have to look elsewhere. Also, a few buyers reported needing to file the hub bore slightly for older Mercury gearcases — that’s rare, but worth knowing if you’re running a pre-2000 motor.

Who Should Buy This

This prop is ideal for three types of boaters: weekend fishermen with aluminum bass boats who want OEM performance without the dealer markup, boaters running a second prop as a spare, and anyone replacing a damaged aluminum prop on a 40–115 HP outboard. It fits Yamaha, Mercury, Suzuki, Tohatsu, and Nissan models — check the included fitment chart before ordering.

FAQ

Will this fit my 2018 Yamaha F70? Yes. The 13-spline hub matches Yamaha gearcases from 1996 to present. Confirm your pitch size (usually stamped on the old prop) matches the VIF size you order.

Is the hub kit actually included? Yes — the replacement hub, thrust washer, and cotter pin come in the box. No hidden extra costs.

How does it compare to a stainless steel prop? Stainless props are stronger and hold pitch better at high RPM, but they cost 3–4x more and transfer impact damage to your lower unit. For most recreational use, aluminum is the smarter choice.

The Verdict

Buy it if you want OEM-quality performance at a fraction of dealer pricing, need a reliable spare, or run a mid-range outboard in freshwater. Skip it if you routinely navigate rocky shallows, need a custom pitch, or demand stainless durability.

This is a genuinely well-made product that respects your budget. At 4.6 stars with 229 ratings, the consensus is clear: it works, it fits, and it saves you real money.

Rating: 4.6/5 ⭐⭐⭐⭐⭐

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.