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Qa1

QA1 03-11 Ford Crown Victoria Pro Front Coil-Over System - Double Adj. - 9in x 650lbs/in - Aluminum

SKU: QAPMD431-09650

Coilover Kits

QAP Coil-Overs - Pro Coil...

Qa1

QA1 03-11 Ford Crown Victoria Pro Front Coil-Over System - Double Adj. - 9in x 650lbs/in - Aluminum

SKU: QAPMD431-09650

Coilover Kits

QAP Coil-Overs - Pro Coil...

A$2,340.40
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

QA1 Pro Coil Systems for 2003-2011 Crown Victorias are a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match, and you are on your way. These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling. QA1 Item number MD431-09650

Product Overview

QA1 Pro Coil Systems for 2003-2011 Crown Victorias are a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match, and you are on your way. These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling.


Features and Benefits

  • Lightweight Billet Aluminum Coil-Over Shocks
  • Made in the USA
  • Easy, bolt-In Installation
  • Ride Height Adjustable
  • 100% Dyno Tested and Serialized
  • Serviceable and Rebuildable by QA1 Authorized Service Centers

Product Details

Active or Passive Suspension:Passive
Adjustable Compression:Yes
Adjustable Rebound:Yes
Adjustable Ride Height:Yes
Assembled:No
Brand:QA1
Description:QA1 03-11 Ford Crown Victoria Pro Front Coil-Over System - Double Adj. - 9in x 650lbs/in - Aluminum
Grade Type:Performance
Internal Construction Type:Dual Tube
Manufacturer Part Number:MD431-09650
Part Number:qapMD431-09650
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Remote Reservoir:No
Spring Color:Black
Spring Material:High Tensile Chrome Silicon
Title:QA1 Shock Absorber and Coil Spring Assembly MD431-09650
UPC:806990159960

Part Type

Coilover Set

Data: v4.2 - Upd: 2026-09-29 15:51:33

Features

  • 100% Dyno Tested and Serialized
  • Easy, bolt-In Installation
  • Lightweight Billet Aluminum Coil-Over Shocks
  • Made in the USA
  • QA1 Item number MD431-09650
  • Ride Height Adjustable
  • Serviceable and Rebuildable by QA1 Authorized Service Centers

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
MD431-09650
Product Attributes - Part Type
Coilover Kits
Product Attributes - Product Line
QA1 Pro Coilover Systems
Product Attributes - UPC
806990159960
Product Attributes - Coilover Kit Position
Front
Product Attributes - Adjustable Valving
Yes
Product Attributes - Number of Valving Selections
324
Product Attributes - Shocks Included
No
Product Attributes - Internal Design
Twin-tube
Product Attributes - Coilover Springs Included
Yes
Product Attributes - Spring Rate (lbs/in.)
650 lbs./in.
Product Attributes - Gas Charged
No
Product Attributes - Upper Mount
Bracket
Product Attributes - Lower Mount
Eyelet
Product Attributes - Shock Body Material
Aluminum
Product Attributes - Shock Body Finish
Silver
Product Attributes - Spring Finish
Black
Product Attributes - Crossmember Included
No
Product Attributes - Adjustable Mounting Bracket Included
No
Product Attributes - Hardware Included
Yes
Product Attributes - Welding Required
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Coilover shocks are double adjustable MD431 shocks. Springs are 9 in. 9HT650 springs.

Reference Information

Brand Name/s Qa1
StreetFX SKU qapMD431-09650
SFX Item ID 4094604
Supplier Item Code 4094604
Manufacturer SKU MD431-09650
Manufacturer UPC 806990159960
Alternative References qa1, QA1-MD431-09650, 9in, 650lbs/in

Compatibility

Application Data
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelBASE
    Beginning Year2003
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelBASE
    Beginning Year2003
    Ending Year2008
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelBASE
    Beginning Year2006
    Ending Year2011
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeV
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelFLEET
    Beginning Year2006
    Ending Year2009
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeV
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelFLEET
    Beginning Year2006
    Ending Year2009
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLWB
    Beginning Year2003
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLWB
    Beginning Year2003
    Ending Year2009
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLWB
    Beginning Year2006
    Ending Year2009
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeV
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLX
    Beginning Year2003
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLX
    Beginning Year2003
    Ending Year2010
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLX
    Beginning Year2006
    Ending Year2011
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeV
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLX SPORT
    Beginning Year2004
    Ending Year2004
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelLX SPORT
    Beginning Year2004
    Ending Year2006
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelPOLICE INTERCEPTOR
    Beginning Year2003
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelPOLICE INTERCEPTOR
    Beginning Year2003
    Ending Year2011
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelPOLICE INTERCEPTOR
    Beginning Year2008
    Ending Year2011
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeV
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelS
    Beginning Year2003
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelS
    Beginning Year2003
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelSPECIAL EDITION
    Beginning Year2005
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN Code9
  • MakeFORD
    ModelCROWN VICTORIA
    SubmodelSPECIAL EDITION
    Beginning Year2005
    Ending Year2005
    Engine TypeV8
    CID281
    Liter4.6
    Engine Size4.6L/281
    Engine FamilyFord modular V8
    DrivetrainRWD
    Engine VIN CodeW

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