Suzuki Propeller Nut Kit – Fits Suzuki DF40A/DF50A/DF60A (Replaces 57630-94500)

$29.99

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Product Details

This Suzuki Propeller Nut Kit is designed for a wide range of Suzuki outboards from 40 to 115 HP (1998–2009), including models DF40A, DF50A, DF60A, DF70, and various DT series engines. It provides all the necessary hardware to securely fasten a propeller to the shaft.

This kit serves as a direct replacement for Suzuki part number 57630-94500 and Sierra part 18-3774.

Offers a direct, OEM-fit installation.
Constructed from high-strength metal for durability in marine environments.
Compatible with 3-blade aluminum and stainless steel propellers.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
Suzuki	57630-94500
Sierra	18-3774

Engine & Model Compatibility

Confirm your engine model/year in the table below.

For Suzuki Outboards: This kit fits a broad range of 2-stroke and 4-stroke models manufactured over two decades.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.
Suzuki	DF40A	40	4-Stroke	1998–2009	57630-94500
Suzuki	DF50A	50	4-Stroke	1998–2009	57630-94500
Suzuki	DF60A	60	4-Stroke	1998–2009	57630-94500
Suzuki	DF70	70	4-Stroke	1998–2008	57630-94500
Suzuki	DT75	75	2-Stroke	1983–1997	57630-94500
Suzuki	DT85	85	2-Stroke	1979–2000	57630-94500
Suzuki	DT90	90	2-Stroke	1989–1997	57630-94500
Suzuki	DT100	100	2-Stroke	1989–2000	57630-94500
Suzuki	DT115	115	2-Stroke	1981–2001	57630-94500

Technical Specs

Product Type: Propeller Hardware Kit
Installation: Direct replacement, OEM fit
Housing Material: Metal
Dimensions: 7.13 × 6.0 × 1.63 in
Weight: 0.91 kg (2 lbs)
Thread Size: M12
Torque Specification: 50–60 N·m (5.0–6.0 kg-m, 43.5 lb-ft)
Other Technical Attributes: For use with 3-blade aluminum and stainless steel propellers

What’s in the Box

1 x Prop Nut (09141-18005)
1 x Cotter Pin (09204-03003)

Installation Notes

Coat the propeller shaft spines liberally with Suzuki water-resistant grease to help prevent corrosion.
Place the stopper/thrust washer on the shaft.
Align the propeller with the propeller shaft splines and slide the propeller onto the shaft.
Place the spacer and washer on the shaft.
Install the propeller nut and tighten it with a torque wrench to 50–60 N·m (5.0–6.0 kg-m, 43.5 lb-ft).
Align the grooves in the propeller nut with the hole in the shaft, then insert the cotter pin and bend the pin ends over to lock it in place.

Safety Warning: To help maintain steering stability and good performance, always maintain the proper trim angle. When installing or removing the propeller, always shift into "Neutral" and remove the emergency stop switch lock plate so that the motor cannot be started accidentally. Wear gloves to protect hands, and "lock" the propeller by placing a block of wood between the blades and the anti-cavitation plate.

Troubleshooting & FAQ

What engines does this propeller nut kit fit?

This kit is designed for Suzuki 40-115 HP outboard engines (1998–2009), including 4-stroke models DF40A, DF50A, DF60A, DF70, and 2-stroke models DT75, DT85, DT90, DT100, and DT115. Always check the compatibility table to confirm your specific model and year.

What is the correct torque for installing the propeller nut?

The propeller nut should be tightened to a torque specification of 50–60 N·m (5.0–6.0 kg-m, or 43.5 lb-ft). After tightening, align the nut's grooves with the hole in the shaft to insert the cotter pin.

How do I know when to replace my prop hardware?

Inspect your propeller hardware during regular maintenance. Replace your prop nut and cotter pin if you notice visible corrosion, stripped threads, or any signs of damage. A new cotter pin should be used every time the propeller is removed.

Can I reuse the cotter pin?

No. For safety, you should always use a new cotter pin upon reinstallation. Bending and unbending the pin weakens the metal, increasing the risk of failure and potential loss of the propeller.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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