Mercury / Mariner 70-100 HP
- Brand / Family
- Mercury, Mariner outboards
- Years
- Year is not the primary fitment key.
- Serial / Note
- Standard gearcase only. Big Foot and High Thrust gearcases are outside this size.
Customer Service: info@jlm-marine.com
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Most new, unused items may be returned within 7 days of delivery, subject to our Returns Policy. A 20% processing/restocking fee may apply for returns that are not the result of our error. Original shipping charges are non-refundable.
If the return is due to our mistake (incorrect or defective item), we will cover the return shipping cost and issue a full refund.
EU customers are entitled to a 14-day cooling-off period in accordance with applicable consumer protection regulations. Certain exclusions may apply.
Refunds are issued after the returned item is received and inspected. Processing times may vary depending on shipping transit and payment provider handling, but most refunds are completed promptly.
To request a return, please contact us at info@jlm-marine.com with your order number for return authorization. For full terms, conditions, and exclusions, please refer to our complete Returns & Refunds Policy page.
Fitment answer
Match key: Propeller diameter and gearcase size decide the fit, not engine year. This 14 in cage clears propellers up to 13.5 in diameter on 70-100 HP outboards with a standard gearcase, and bolts to the anti-ventilation plate and skeg.
Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.
Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson/Evinrude Serial Number Guide.
Confirm your engine model/year in the table below. For Suzuki owners, You can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.
Mercury / Mariner 70-100 HPYamaha 70-100 HPHonda 70-100 HPBRP Evinrude / Johnson 70-100 HPSuzuki 70-100 HPPropeller limit 13.5 inOn a phone, each row stacks into a card.
| Type | Full number | Relationship |
|---|---|---|
| SeaSierra | SP62814 | Primary reference |
| JLM Marine | 21PG004 | This listing, 14 in guard |
| JLM Marine | 21PG003 | Smaller 13 in guard, 40-65 HP |
Cross-reference numbers identify compatible applications. They are not printed on this part.
More than 20 years of marine-parts manufacturing experience. This high-quality aftermarket replacement is engineered to meet or exceed applicable OEM specifications. Every unit is 100% inspected before release.
Aftermarket product: Not a genuine Mercury, Yamaha, Honda, BRP or Suzuki part. Brand names and part numbers identify compatible applications only.
Drilling is permanent. Mark and measure before the first hole.
Measure your propeller from blade tip to blade tip. Up to 13.5 in on a 70-100 HP standard gearcase, this size fits. Larger propellers on Big Foot, High Thrust or E-TEC gearcases need a bigger cage.
The guard halves come with their own mounting holes. The anti-ventilation plate and skeg are drilled during installation, and the kit includes the drill bit plus 9 sets of bolts, washers and Nyloc nuts.
The cage is rigid polypropylene, which stays light and does not corrode. All supplied bolts, washers and nuts are 304 stainless steel for salt-water service.
The cage is open front and rear so water flows straight through the propeller disc. It is rated for vessels up to 25 mph, 22 knots, which covers most pontoon, deck and utility hulls in this power range.
No. It is an aftermarket guard built to interchange with SeaSierra SP62814. Package size, weight, materials, kit contents and mounting method match that reference.
Yes. The halves unbolt from the plate and skeg and go back on the same holes. Keep the stainless hardware together so the set stays complete.
We can ship to virtually any address in the world with free shipping available for most regions.
For our typical US and Canadian customers , our shipping timeframes are as follows:
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.
As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.
We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.
This product arrived without instructions. As a direct result it was installed incorrectly, and failed at speed, destroying the prop in the process resulting in a $350+ loss to the youth sailing program at our little club, one we can ill-afford. Now we need another one we’re not eager to pay for. Can you at least send a replacement for no charge? David West [****]
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