520-SM454KXL Big Block GM H/P Long Riser Kit
This system was designed for
mildly modified factory engine packages. It shares the same features as the
systems listed above, except its long tailpipe discharges water later in the
exhaust stream. This provides some flexibility for mild cam shaft changes. Please
consult us for cam shaft compatibility. A measurement sheet must be filled out when purchasing.
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676-18-2536 Key Features:
Interchanges/ReplacesGLMJohnson/Evinrude OutboardMallory
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676-18-7151 Key Features:
Additional Details:
- I.D.: 3.000" or 76.2mm
- Width: 0.135" or 3.4mm
Interchanges/ReplacesGLMMalloryMercruiser Stern DriveMercury Marine
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676-18-7157 Key Features:
Additional Details:
- I.D.: 3.500" or 88.9mm
- Width: 0.210" or 5.3mm
Interchanges/ReplacesGLMMalloryMercruiser Stern DriveMercury Marine
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676-18-7160 Key Features:
Additional Details:
- I.D.: 2.635" or 67mm
- Width: 0.210" or 5.3mm
Interchanges/ReplacesGLMMalloryMercruiser Stern DriveMercury Marine
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676-18-7161 Key Features:
Additional Details:
- I.D.: 3.250" or 82.6mm
- Width: 0.070" or 1.8mm
Interchanges/ReplacesGLMMalloryMercruiser Stern DriveMercury Marine
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676-18-7174 Key Features:
Additional Details:
- I.D.: 0.620" or 15.7mm
- Width: 0.100" or 2.5mm
Interchanges/ReplacesChrysler/Force/US MarineGLMJohnson/Evinrude OutboardMalloryMercruiser Stern DriveMercury MarineMercury Sport JetOMC Stern Drive
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676-18-7419 Key Features:
Additional Details:
- I.D.: 2.675" or 67.9mm
- Width: 0.103" or 2.61mm
Interchanges/ReplacesChrysler/Force/US MarineGLMMalloryMercury MarineSears
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676-18-7420 Key Features:
Additional Details:
- I.D.: 0.796" or 20.2mm
- Width: 0.139" or 3.5mm
Interchanges/ReplacesGLMMalloryMercruiser Stern DriveMercury MarineMercury Race OutboardMercury Race SterndriveMercury Sport Jet
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676-18-7961 Additional Details:
- I.D.: 3.650" or 92.7mm
- Width: 0.135" or 3.4mm
Interchanges/ReplacesMalloryMercury Marine
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676-18-7449 Key Features:
Additional Details:
- I.D.: 4.487" or 114mm
- Width: 0.103" or 2.6mm
Interchanges/ReplacesGLMMalloryMercruiser Stern Drive
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