70mm Aluminium Dust Cap – Screw

Name: 70mm Aluminium Dust Cap with Screwed Thread
Brand: Couplemate
SKU: CAP-70
Price: $49.50
Availability: InStock

SKU: CAP-70 Category: Bearing Caps - Buddies Brand: Couplemate

Price

$49.50 Inc.GST

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70mm Aluminium Greasable Dust Cap

Protect your trailer or truck wheel bearings with this premium 70mm screw-in aluminium dust cap. Machined from high-grade aluminium, it offers superior corrosion resistance compared to standard steel caps.

Technical Specifications

Diameter: 70mm
Material: High-grade billet aluminium
Fitting Type: Screw-in (Threaded)
Compatibility: Threaded hubs matching a 70mm diameter

Does it include a rubber O-ring?

Most standard installations require an O-ring for a completely watertight seal. Please check if your specific hub profile requires a separate seal. This cap does not include a seal.

Technical Resources

Customer Reviews

★★★★★ “Perfect Fit for Off-Road Hubs” – Mark T.

I swapped out my old, rusted steel caps for these. The aluminium threads went in smoothly, and greasing the bearings now takes 30 seconds.

★★★★★ “Excellent Quality” – Sarah M.

Highly recommend for boat trailers. Absolute lifesaver against saltwater corrosion.

Complete Range of Dust Caps

Frequently Asked Questions: Genuine 70mm Aluminium Screw-In Dust Caps

What are the main advantages of using a genuine 70mm aluminium screw-in dust cap?Genuine aluminium caps feature precision-machined threads that ensure a perfect, airtight seal, keeping grease in and contaminants out. Their high-grade aluminium construction offers exceptional corrosion resistance in harsh marine or highway environments, preventing thread galling and extending bearing life.
What are the disadvantages of using non-genuine or universal 70mm dust caps?Non-genuine alternatives often have poor thread tolerances, leading to cross-threading, loose fits, or vibration-induced loss on the road. Lower-quality alloys or plastics degrade quickly under UV and temperature stress, exposing your bearings to water, salt, and road grit.
Will a non-genuine cap save me money in the long run?While a non-genuine cap may cost slightly less upfront, a loose or failed cap lets water contaminate your hub grease. This can quickly lead to bearing failure, ruined spindles, and expensive roadside breakdowns, making non-genuine options a high financial risk.

Genuine vs. Non-Genuine 70mm Screw Dust Caps

Performance Factors	Genuine 70mm Aluminium Screw Cap	Non-Genuine / Aftermarket Cap
Thread Precision	CNC-machined for a secure, vibration-proof lock.	Poor tolerances; highly prone to cross-threading.
Material Quality	Marine-grade, high-strength anodised aluminium.	Low-grade cast alloy or brittle plastics.
Hub Protection	Complete barrier against water, dust, and salt grit.	High risk of leaks that can cause premature bearing failure.
Value Over Time	Invest once; eliminates costly hub and axle rebuilds.	Cheap upfront, but risks expensive roadside damage.

Additional information

Weight	1 kg
Dimensions	8 × 8 × 8 cm

Our Service Lifetime Warranty

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.

Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.

Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.

60-Day Returns

After 60 years of experience, we know that life has its unpredictable moments.

All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.

You can view our full policy for change-of-mind returns here.

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