American Hi-Tek

Hi Tek Replacement Exhaust Manifolds


Hi Tek Replacement Exhaust Manifolds

  • Direct replacement for Stock OEM Exhaust systems
  • Standard fitment as well as higher than standard for applications that previously had spacers eg. 3", 4", 6" etc.
  • One piece design eliminates the possibility of riser / manifold gasket failure resulting in engine damage
  • Extractor desing for cyclinder scavenging and maximum effieceincy and performance
  • Beautiful Polished finished
  • Smooth even flow of cooling water to all surfaces
  • Only one water inlet reduces the chances of leaking
  • Approx. 1/4 the weight of cast manifolds
  • Zinc anode prevents electrolysis (replaceable)
  • 10 Year Limited Warranty

Replacement Manifolds 1

Replacement Manifolds 2

NEW: ETX / ETXCAT

Replacement Manifolds 3

NEW: ETX / ETXCAT

Replacement Manifolds 4


History of Hi-Tek Manifolds


These are the Original stainless steel manifolds that were developed by Allen Will in Queensland Australia and sold under the brand Hi-Tek Marine.

The original OEM cast iron manifolds were utilized to make an exact Jig for the production of the new stainless manifolds for each application. There are many variations for each application and therefore each set is "semi-custom" to the customers application and particular boat requirements. When ordering a set you will be asked about things such as brackets attached to your current manifolds, height of the current set you are replacing, outlet size, if the engine is a stern drive or a V-Drive, as well as other questions pertinent to your particular application.

Over many years of improvements in the design, slight design changes were made to improve the quality as well as the fit and finish of these manifolds. Following from these improvements in the design the warranty has been increased from 5 years to 10 years as well (providing the end customer maintains the manifolds in the proper manner of course).

The founder of Hi-Tek Marine, Allen, is still involved in the marine industry but now spends more time with his family as well as enjoying the wonderful marine environment in Australia in a more relaxed capacity. Allen is now relying on Marine Torque of Australia in conjunction with American Hi-Tek to continue the legacy of his "Hi-Tek Manifolds". American Hi-Tek Inc. is the primary as well as the oldest partner that origionally collaborated with Allen on these manifolds. American Hi-Tek Inc. is located in the Phoenix area of Arizona and we look forward to serving your marine manifold needs for many years in the future.


Product Name Product Number Price
CHRYSLER
318 Chrysler Center Rise Replacement Exhaust Manifolds HT10 $3,150.00
318 Chrysler Direct Drive Replacement Exhaust Manifolds HT20 $3,150.00
318 Chrysler Stern Drive Replacement Exhaust Manifolds HT21 $3,150.00
318 Chrysler Late Model Replacement Exhaust Manifolds HT47 $3,150.00
440 Chrysler Center Rise Replacement Exhaust Manifolds HT22 $3,150.00
INDMAR
308 Indmar Replacement Exhaust Manifolds HT39 $3,150.00
350 Chevy Indmar Replacement Exhaust Manifolds HT36 $3,150.00
350 Chevy Indmar Replacement Exhaust Manifolds, 3-1/2" Hose HT40 $3,150.00
5.7 Chevy Indmar EXT HT63 $3150.00
5.7 Chevy Indmar EXTCAT HT63 $3350.00
5.7 Chevy Indmar EXT-Wide HT65 $3150.00
6.0 Chevy Indmar Wakesetter with CATS HT71 $3350.00
350 Chevy Late Model Indmar Replacement Exhaust Manifolds HT59 $3,150.00
302/351 Ford Indmar Replacement Exhaust Manifolds HT37 $3,150.00
351 Ford Cleveland Indmar Replacement Exhaust Manifolds HT55 $3,150.00
7.4L Indmar Replacement Exhaust Manifolds HT38 $3,150.00
427 Ford Indmar Style Replacement Exhaust Manifolds HT58 $3,150.00
MERCRUISER
4.3L V6 Chevrolet Mercruiser Replacement Exhaust Manifolds, 4" Hose HT5 $3,150.00
V6 Mercruiser Replacement Exhaust Manifolds, 3" Hose HT9 $3,150.00
LX Mercruiser V6 One Piece Replacement Exhaust Manifolds HT7 $3,150.00
5.7L Chevrolet Mercruiser Replacement Exhaust Manifolds, 4" Hose HT1 $3,150.00
5.7L Chevrolet Mercruiser Replacement Exhaust Manifolds, End Dump HT2 $3,150.00
5.7L Chevrolet Mercruiser Replacement Exhaust Manifolds, 3" Hose HT3 $3,150.00
6.2 Mercruiser Center Rise Replacement Exhaust Manifolds, 4" Hose HT11 $3,150.00
7.4L Chevrolet Mercruiser Replacement Exhaust Manifolds 4" Hose HT6 $3,150.00
7.4L Chevrolet Mercruiser Replacement Exhaust Manifolds, 3" Hose HT8 $3,150.00
496 Mercruiser Replacement Exhaust Manifolds HT13 $3,150.00
OMC
2.3L OMC 4 Cylinder Replacement Exhaust Manifolds HT15 $2,500.00
4.3L V6 Chevrolet OMC Replacement Exhaust Manifolds HT17 $3,150.00
350 Chevy OMC Center Rise Replacement Exhaust Manifolds HT14 $3,150.00
350 Chevy OMC End Dump Replacement Exhaust Manifolds HT16 $3,150.00
Ford 302 / 351 OMC End Riser (Early style) HT56 $3,150.00
Ford OMC Center Rise Replacement Exhaust Manifolds (Late Model) HT19 $3,150.00
460 King Cobra OMC Replacement Exhaust Manifolds HT18 $3,150.00
PCM
PCM 350 Chevy Replacement Exhaust Manifolds HT57 $3,150.00
PCM 351 Ford Replacement Exhaust Manifolds, 3-1/2" Hose HT42 $3,150.00
PCM 351 Ford Replacement Exhaust Manifolds, 3" Turned Up End HT44 $3,150.00
PCM 7.4L Chevy Replacement Exhaust Manifolds HT43 $3,150.00
VOLVO
Volvo AQ 171 16V DOHC 4 Cylinder Replacement Exhaust Manifolds HT23 $2,500.00
Volvo AQ140 / AQ120 4 Cylinder Replacement Exhaust Manifold HT51 $2,500.00
Volvo V6 Early GM Replacement Exhaust Manifolds HT24 $3,150.00
Volvo V6 Late GM Replacement Exhaust Manifolds HT26 $3,150.00
Volvo 350 Early Chevy Center Rise Replacement Exhaust Manifolds HT28 $3,150.00
Volvo 350 Late Chevy Center Rise Replacement Exhaust Manifolds HT25 $3,150.00
5.8 Ford Volvo Late Model Replacement Exhaust Manifolds HT27 $3,150.00
7.4L Volvo Replacement Exhaust Manifolds HT29 $3,150.00
496 Volvo Replacement Exhaust Manifolds HT30 $3,150.00
7.4L 3 Piece Volvo Replacement Exhaust Manifolds HT31 $3,150.00
YAMAHA
Yamaha V6 Replacement Exhaust Manifolds HT53 $3,150.00
Yamaha 5.7L V8 Replacement Exhaust Manifolds HT54 $3,150.00
OTHER
6.5 Diesel Replacement Exhaust Manifolds HT32 $3,150.00
Duramax Diesel Log Manifolds HT64 $3,150.00
HT Diesel Manifolds HT70 $3150.00
5.8L Small Block Ford Replacment Exhaust Manifolds, End Dump HT4 $3,150.00
6 Cylinder BMW Manifolds HT61 $2550.00
4 Cylinder BMW Manifolds HT62 $2500.00
Buick V6 Standard Height Replacement Exhaust Manifolds HT48 $3,150.00
Buick V6 6" Taller Replacement Exhaust Manifolds HT49 $3,150.00
Chevy 6.0 Vortec Manifolds HT66 $3150.00
Honda F12X Exhaust Elbow HT68 $2500.00
Honda F15X Exhaust Elbow HT69 $2500.00
LS1 5.7L Chevy Replacement Exhaust Manifolds HT41 $3,150.00
Lexus V-8 4.0L Replacement Exhaust Manifolds HT50 $3,150.00
455 Oldsmobile Replacement Exhaust Manifolds HT52 $3,150.00


All "American Hi Tek" brand
products are made in America

Made In The USA