A1578 Mackay 16mm x 36mm x 58mm Steel Bush (Suits Rocka Spring) | Marine Trailer Part
A1578 Mackay 16mm x 36mm x 58mm Steel Bush (Suits Rocka Spring) | Marine Trailer Part
Couldn't load pickup availability
✓ Authorised Volvo Penta Dealer · Marine & auto specialists · Ships Australia-wide
🔧 Product Description
Genuine Mackay Marine Trailer Products Rocka-Spring Steel Pivot Bush 16 × 36 × 58mm – Part Number: A1578
A heavy steel pivot bush for compatible Mackay Rocka load-sharing spring assemblies. It supports the centre or spring pivot bolt and provides a durable replaceable sleeve inside the suspension component.
⚙️ Key Features
- Heavy-duty steel construction
- Designed for Rocka spring suspension
- Supports a 16mm pivot bolt
- Replaceable wear sleeve
- Maintains correct pivot alignment
📏 Specifications
- Inside diameter: 16mm
- Outside diameter: 36mm
- Length: 58mm
- Supply quantity: One bush
🔄 Cross Reference & Related Parts
- Related Rocka centre arm: Mackay A1585G
- Related greaser bolts: Mackay A1572, A1580 and A1590
🚤 Compatibility & Application
- Compatible Mackay Rocka spring eye or rocker-arm bore
- Bush must be a firm square fit without cracking the housing
- Lubricate the pivot in accordance with the suspension design
- Replace the bolt if worn or grooved
🔌 Function
Provides a durable bearing sleeve for the Rocka suspension pivot and keeps the bolt aligned.
⚠️ Common Signs of Failure
- Bush bore is oval or scored
- Bush is loose in the spring or rocker
- Pivot knocks under braking or road shock
- Steel sleeve is cracked or heavily corroded
- Grease cannot reach the bearing surface
📦 Condition
- Genuine Mackay Marine Trailer Products part
- Brand new
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
Share
