Hi-Tek Exhaust Systems
Hi-Tek Marine Stainless Steel Manifolds of Queensland are manufacturers whose number one priority is customer satisfaction and service excellence. Every manifold and riser is fabricated and hand welded by highly trained and experienced staff.
Product Features:
- Polished finished
- Zinc anode (replaceable)
- Approx. 1/4 the weight of cast manifolds
- Smooth even flow of cooling water to all surfaces
- Replaces Stock OEM Exhaust systems
- Standard replacement exact fittings and higher than standard eg. 3", 6" 12" etc. manifolds
- One piece design eliminates the possibility of gasket failure resulting in engine failure
- Only one water inlet reduces the chances of leaking
- 5 Year Limited Warranty
Hi-Tek vs Indmar (350 Chevy)
260 HP Mercruiser Dyno Test
260 Mercruiser Test Dyno Report
- Water mixes with exhaust gases
- Extractor design for cylinder scavenging for maximum efficiency
- One piece design eliminates the possibility of gasket failure resulting in engine failure
- Only one water inlet reduces the chances of leaking
- Anode prevents electrolysis
How to measure riser height
Click on the part number to check pricing or place an order.
Small Block Chevy
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Part No. |
Description |
652-HT39 |
308 Indmar Replacement Exhaust Manifolds |
652-HT36 |
350 Chevy Indmar Replacement Exhaust Manifolds |
652-HT40 |
350 Chevy Indmar Replacement Exhaust Manifolds, 3-1/2" Hose |
652-HT59 |
350 Chevy Late Model Indmar Replacement Exhaust Manifolds |
652-HT12 |
350 Chevy Mercruiser 3" Higher Replacement Exhaust Manifolds |
652-HT14 |
350 Chevy OMC Center Rise Replacement Exhaust Manifolds |
652-HT16 |
350 Chevy OMC End Dump Replacement Exhaust Manifolds |
652-HT3 |
5.7L Chevrolet Mercruiser Replacement Exhaust Manifolds, 3" Hose |
652-HT1 |
5.7L Chevrolet Mercruiser Replacement Exhaust Manifolds, 4" Hose |
652-HT2 |
5.7L Chevrolet Mercruiser Replacement Exhaust Manifolds, End Dump |
652-HT41 |
GM LS Exhaust Manifold 4.8, 5.3, 6.0, 6.2, 7.0L Replacement Exhaust Manifolds |
652-HT11 |
Mercruiser 6.2 Center Rise Replacement Exhaust Manifolds, 4" Hose |
652-HT57 |
PCM 350 Chevy Replacement Exhaust Manifolds |
652-HT28 |
Volvo 350 Early Chevy Center Rise Replacement Exhaust Manifolds |
652-HT25 |
Volvo 350 Late Chevy Center Rise Replacement Exhaust Manifolds |
652-HT54 |
Yamaha 5.7L V8 Replacement Exhaust Manifolds |
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Big Block Chevy
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Part No. |
Description |
652-HT31 |
7.4L 3 Piece Volvo Replacement Exhaust Manifolds |
652-HT6 |
7.4L Chevrolet Mercruiser Replacement Exhaust Manifolds 4" Hose |
652-HT8 |
7.4L Chevrolet Mercruiser Replacement Exhaust Manifolds, 3" Hose |
652-HT38 |
7.4L Indmar Replacement Exhaust Manifolds |
652-HT43 |
PCM 7.4L Chevy Replacement Exhaust Manifolds |
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Small Block Ford
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Part No. |
Description |
652-HT37 |
302/351 Ford Indmar Replacement Exhaust Manifolds |
652-HT55 |
351 Ford Cleveland Indmar Replacement Exhaust Manifolds |
652-HT19 |
351 Ford OMC Center Rise Replacement Exhaust Manifolds |
652-HT27 |
5.8 Ford Volvo Late Model Replacement Exhaust Manifolds |
652-HT4 |
5.8L Small Block Ford Replacment Exhaust Manifolds, End Dump |
652-HT56 |
Ford 302/351 OMC Early Model Replacement Exhaust Manifolds |
652-HT44 |
PCM 351 Ford Replacement Exhaust Manifolds, 3" Turned Up End |
652-HT42 |
PCM 351 Ford Replacement Exhaust Manifolds, 3-1/2" Hose |
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Big Block Ford
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Part No. |
Description |
652-HT58 |
427 Ford Indmar Style Replacement Exhaust Manifolds |
652-HT18 |
460 Cobra OMC Replacement Exhaust Manifolds |
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Four Cylinder
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Part No. |
Description |
652-HT15 |
2.3L OMC 4 Cylinder Replacment Exhaust Manifolds |
652-HT51 |
AQ 140/120 Volvo Replacement Exhaust Manifolds |
652-HT30 |
Volvo 120HP 4 Cylinder Replacement Exhaust Manifolds |
652-HT23 |
Volvo AQ 171 4 Cylinder Replacement Exhaust Manifolds |
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V6 Chevy
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Part No. |
Description |
652-HT5 |
4.3L V6 Chevrolet Mercruiser Replacement Exhaust Manifolds, 4" Hose |
652-HT26 |
Volvo V6 Late GM Replacement Exhaust Manifolds |
652-HT17 |
4.3L V6 Chevrolet OMC Replacement Exhaust Manifolds |
652-HT7 |
LX Mercruiser V6 One Piece Replacement Exhaust Manifolds |
652-HT9 |
V6 Mercruiser Replacement Exhaust Manifolds, 3" Hose |
652-HT24 |
Volvo V6 Early GM Replacement Exhaust Manifolds |
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