Chassis Grenade (4WD Chassis Flusher)

Chassis Grenade (4WD Chassis Flusher)

39total reviews

Skip to product information
1 of 13
Chassis Grenade (4WD Chassis Flusher)
4.6
Rated 4.6 out of 5 stars
39 Reviews
Regular price $70.00
Regular price Sale price $70.00
Bundle & Save $-70.00 Sold out
Tax included.

The Chassis Grenade is a magnetic chassis flushing device featuring a 360º spinning nozzle head, designed to attach securely to chassis rails and evenly distribute cleaning solution, ensuring a thorough internal flush to remove salt, sand, and debris.

About this product

The Chassis Grenade is a magnetic chassis flush device designed to blast out salt, sand, and mud deep inside your vehicle’s chassis rails and hard-to-reach areas. Attach it to your 4WD, truck, or trailer frame, connect it to The Captain’s Musket, and let the high-pressure water jets do the work.

✅ 360° spinning nozzle for full coverage and deep cleaning
✅ Powerful magnetic base secures it to chassis rails for hands-free operation
✅ Flushes out built-up salt, sand, and debris, preventing rust and corrosion
✅ Easy quick-connect setup with The Captain’s Musket or standard hose adapters

Protect your undercarriage from rust and clean your chassis with the Chassis Grenade—because what you can’t see can still cause damage!

FAQ

1. What is the Chassis Grenade?

The Chassis Grenade is a magnetic chassis flusher designed to remove built-up salt, sand, and debris from inside your chassis rails. It uses a 360° spinning nozzle to spray water in all directions, providing a deep, hands-free clean.

2. How does it work?

Simply attach the Chassis Grenade to your chassis rail using its strong magnetic base, connect it to The Captain’s Musket or a compatible hose, and turn on the water. The high-pressure spinning jets will flush out contaminants, helping to prevent rust and corrosion.

3. Is it safe for all vehicles?

Yes! The Chassis Grenade is perfect for 4WDs, trucks, trailers, caravans, and any vehicle with a hollow chassis. It’s designed to fit into standard chassis rails and can be moved to multiple locations for a thorough clean.

4. Can I use it without The Captain’s Musket?

Yes! While it works best with The Captain’s Musket Foam & Flush Gun, you can also connect it to a standard garden hose using the correct quick-connect fittings.

5. How strong is the magnet?

The heavy-duty magnet is strong enough to hold the Chassis Grenade in place during flushing but can still be easily repositioned as needed. It ensures a secure, hands-free clean.

6. How often should I use it?

If you take your 4WD off-road, drive on the beach, or live in a coastal area, using the Chassis Grenade after every trip is recommended to flush out corrosive salt and debris.

7. Can it be used with rust inhibitors or cleaning solutions?

Yes! You can run Chassis Flush Solution or other anti-rust treatments through it for added protection.

8. How do I store and maintain it?

After each use, rinse it with fresh water, check for blockages, and store it in the included mesh storage bag to protect it and keep all fittings secure.

9. Why do I need a chassis flusher?

Salt, mud, and sand build up inside chassis rails, leading to rust and long-term damage. A quick hose down isn’t enough—the Chassis Grenade provides a deep, targeted flush, extending the life of your vehicle’s undercarriage.

Shipping & Delivery

Location: Our warehouse is located at 2/14 Thomas Hanlon Court, Yatala 4207.

Free Shipping: All Australian orders over $170 qualify for free shipping*

Flat Rate Shipping: For orders under $170, we offer a flat rate shipping fee of $9 within Australia*

*International orders will be required pay for up-to-date shipping charges, calculated at checkout. Bulky items incur additional shipping charges, calculated at checkout.

Shipping Carriers: We use Australia Post and Aramex within Australia.

Dispatch Time: Orders are typically dispatched within 1-3 business days.

Delivery Times:

Australia:
- Metro Areas: Standard 2-5 business days & Express 1-3 business days
- Western Australia & Northern Territory: 3-7 business days & express 2-3 business days

International:
- Express: 5 business days
- Standard: 7-10 business days

Pickup: Local pickup is available from our warehouse at 2/14 Thomas Hanlon Court, Yatala 4207. Please select the "Pickup" option at checkout.

Possible Delays: Occasionally, shipping may take an extra day or two. If your order takes longer than expected, please feel free to reach out to us at admin@saltycaptain.co.

Easter Sale – Terms & Conditions

● Sale Dates: Valid from Friday 25 April to Sunday 27 April
2025 (AEST).

● Captain Cashback Offers:

○ Spend $119 = Receive $20 value

○ Spend $199 = Receive $50 value

○ Spend $399+ = Receive $100 value

● Cashback is delivered via physical vouchers included in
your order:

○ Vouchers are issued in $10 or $50
denominations

○ Only one voucher can be used per
order

○ Vouchers cannot be used to
discount already marked-down or promotional items

○ Voucher value and quantity will
be shown on your packing slip

● No discount codes required – offers are automatically
applied at checkout based on cart total.

● All products are eligible during the Easter sale.

● Cannot be combined with other promotions or codes.

● Offer valid while stock lasts – limited availability.

● Shipping times may vary due to high order volume.

Need Help?


Contact us at admin@saltycaptain.co – we’re happy to help.

View full details

REAL REVIEWS. REAL CUSTOMERS

The freshest reviews are in

4.6
Rated 4.6 out of 5 stars
Based on 39 reviews
Total 5 star reviews: 32 Total 4 star reviews: 3 Total 3 star reviews: 2 Total 2 star reviews: 1 Total 1 star reviews: 1
90%would recommend these products
Slide 1 selected
39 reviews
  • M
    Matt
    Reviewing
    4WD DIY Bucket - Value Bundle
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    4wd diy bucket

    Great product

  • MC
    Matthew C.
    Verified Buyer
    Reviewing
    4WD DIY Bucket - Value Bundle
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    4wd diy bucket

    Great stuff

  • CP
    Chris P.
    Verified Buyer
    Reviewing
    4WD DIY Bucket - Value Bundle
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Amazing!

    Products amazing. Easy to use.

    Customer service exceeded my expectations.

  • RP
    Rebecca P.
    Verified Buyer
    Reviewing
    4WD DIY Bucket - Value Bundle
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    He loved it!

    Happy with his Christmas gift. Washed his car straight away.

  • RS
    Robert S.
    Verified Buyer
    Reviewing
    4WD DIY Bucket - Value Bundle
    I recommend this product
    Rated 5 out of 5 stars
    3 months ago
    Awesome 👌

    Just run the hose musket with 4wd wash and drop dry and the car looks awesome.

    Used tyre shine on tyres and hit the flares and they pop!

    Very happy so far with the product!

CAPTAIN’S TIPS

The Chassis Grenade (4WD Chassis Flusher) works great with these products: