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Fluidampr Ford 5/8 4-bolt Pulley Spacer Aluminum N/A Balanced Damper

SKU: FDR717656

Harmonic Balancer Spacers

FDR Dampers - Domestic

Fluidampr Ford 5/8 4-bolt Pulley Spacer Aluminum N/A Balanced Damper

SKU: FDR717656

Harmonic Balancer Spacers

FDR Dampers - Domestic

A$208.31
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Optional 5/8" 4-bolt pulley alignment spacer for Small Block Ford Fluidampr applications.

Product Overview

Fluidampr Engine Dampers are designed to control destructive vibrations which are transfered thru the crankshaft. Each time the air/fuel mixture inside a cylinder is ignited, the combustion that occurs creates a torque spike that is applied to the crankshaft through the piston and rod. This torque spike is so severe that it not only turns the crankshaft, it actually twists the crankshaft ahead of its normal rotation and then the crankshaft rebounds. This twisting action is known as torsional vibration. When these torque spikes and forces get into phase with the natural frequency, critical torsional harmonic vibrations occur and can be seriously destructive to the bearings and the crankshaft. Dampers are designed to control those destructive vibrations. Critical harmonic vibrations occur numerous times in a engine’s operating range. Stock rubber and elastomer-type dampers are frequency sensitive “tuned absorbers”, and work at only one critical frequency. In the case of a stock rubber damper, it is tuned for a factory engine’s critical harmonic vibrations. If you change the mass of pistons, rods, or the crankshaft, you change the natural frequency of the crankshaft assembly; therefore, the stock damper is no longer tuned to the new frequency of vibration, and you may be headed for early failure of expensive engine components. Dampers also create heat while they work, and rubber is a poor dissipator of heat. This heat and the exposure to the elements deteriorates rubber, causing it to crack and change durometer, which then leads to inertia ring slippage, damper failure, uncontrolled torsional vibration, and costly engine parts breakage.


Features and Benefits

  • Spacer only.
  • Small Block Ford applications.

Product Details

Bolt and Washer Included:No
Depth:0.62
Description:Optional 5/8" 4-Bolt Harmonic Balancer Pulley Spacer
Grade Type:Performance
Inside Diameter:2.12
Material:Aluminum
Part Number:fdr717656
Prop 65 (C, R, or CR):CR
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Prop 65 Yes/No:Yes
Title:Fluidampr - 717656 - Harmonic Balancer - Fluidampr - SBF - Pulley Spacer - Each

Application Summary

Pulley Spacer. May be required with Fluidampr #650211 and #650231 for Ford Small Block applications 1975-later.

Part Type

Engine Harmonic Balancer Adapter

Data: v4.2 - Upd: 2026-09-29 00:44:05

Features

  • Small Block Ford applications.
  • Spacer only.

Specifications

Product Attributes - Brand
Fluidampr
Product Attributes - Manufacturer's Part Number
717656
Product Attributes - Part Type
Harmonic Balancer Spacers
Product Attributes - Product Line
Fluidampr Crankshaft Damper Spacers
Product Attributes - UPC
00815293001760
Product Attributes - Spacer Thickness (in.)
0.625 in.
Product Attributes - Spacer Material
Aluminum
Product Attributes - Spacer Color
Black
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Fits Fords with 4-hole pattern dampers.

Reference Information

Brand Name/s Fluidampr
StreetFX SKU fdr717656
SFX Item ID 4403597
Supplier Item Code 4403597
Manufacturer SKU 717656
Manufacturer UPC 815293001760
Alternative References FLU000059, FLU717656, 4-bolt

Compatibility

Pulley Spacer. May be required with Fluidampr #650211 and #650231 for Ford Small Block applications 1975-later.

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