• 78458A1 Mercury MerCruiser Bellows Kit | Genuine Quicksilver OEM Part
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78458A1 Mercury MerCruiser Bellows Kit | Genuine Quicksilver OEM Part

78458A1 Mercury MerCruiser Bellows Kit | Genuine Quicksilver OEM Part

$103.80 AUD
$103.80 AUD
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🔧 Product Description

Genuine Quicksilver Exhaust Tube Assembly - Part Number: 78458A1

Genuine Quicksilver/MerCruiser exhaust tube assembly for MerCruiser Bravo stern drive applications. Although commonly described as a bellows-style exhaust service part, this component is the exhaust tube assembly used in place of the full exhaust bellows on compatible Bravo I, Bravo II and Bravo III drive installations.

⚙️ Key Features

  • Genuine Quicksilver/MerCruiser OEM exhaust tube assembly
  • Used on compatible Bravo stern drive exhaust outlets
  • Direct replacement for 78458 and 78458A1 references
  • Helps direct exhaust discharge through the drive area
  • Easier service-style exhaust tube design compared with full bellows installation

🚤 Compatibility

Commonly used on

  • MerCruiser Bravo stern drive exhaust tube applications
  • MerCruiser Bravo I, Bravo II and Bravo III exhaust outlet service
  • MerCruiser Alpha / Bravo-style exhaust service where 78458A1 is specified by parts diagram

Typically suits

  • Engine models:
  • MerCruiser Bravo One stern drives
  • MerCruiser Bravo Two stern drives
  • MerCruiser Bravo Three stern drives
  • MerCruiser Bravo transom assemblies using exhaust tube 78458A1
  • MerCruiser stern drive applications where the exhaust tube assembly is specified instead of full exhaust bellows
  • HP Range: Not applicable - stern drive exhaust tube component
  • Engine Type: MerCruiser Bravo stern drive exhaust outlet system
  • Year Range: Application dependent by Bravo drive model, transom assembly and parts diagram

🔌 Function

The exhaust tube helps direct exhaust gases and cooling water discharge through the stern drive exhaust outlet area. It provides a shorter open exhaust connection compared with a fully sealed exhaust bellows arrangement and is commonly used on Bravo drive service applications.

⚠️ Common Signs of Failure

  • Cracked, split or hardened exhaust tube
  • Exhaust noise increase around the transom area
  • Exhaust discharge not directed correctly
  • Tube slipping from the mounting lip
  • Damage found during transom or bellows service
  • Rubber deterioration from heat and age

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 78458A1 → Supersedes 78458
  • 78458 earlier OEM reference

OEM / Related Numbers

  • 78458A1
  • 78458
  • 78458A 1
  • Exhaust tube assembly
  • Exhaust tube bellows replacement reference

Aftermarket / Verified Equivalents

  • Sierra: 18-2756
  • GLM: 89180
  • CEF: exhaust tube bellows equivalent
  • REC: REC78458A1

📦 Condition

  • Genuine Quicksilver part
  • Brand new
  • Supplied in original or equivalent packaging

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

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?

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.

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