Complete HX Holden Restoration Parts Checklist

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HQ HJ HX HZ Repair Manual

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HQ Holden Sandman HQ

1974 · Panel Van
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Your vehicle: HQ Holden Sandman HQ Change
Years 1974
Body Panel Van
Doors 2
Seats 2

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Exhaust

Component Position Part Number Brand Specification Diameter Material Quantity Notes
Exhaust Header / Extractor Front GEN090E-1
Fits 104 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: GEN090E-1

Genie Headers 6-cylinder red motor — Steel 1 Performance Exhaust catalogue
Exhaust Header / Extractor Front PH5027
Fits 105 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: PH5027

Pacemaker Red 6-cylinder dual header — Steel 1 Performance Exhaust catalogue
Exhaust Header / Extractor Front HU230STM
Fits 71 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: HU230STM

Hurricane Headers 253/308 V8 — Mild steel 1 Performance Exhaust catalogue
Exhaust Header / Extractor Front GEN413E-1
Fits 71 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: GEN413E-1

Genie Headers 253/308 V8 — Steel 1 Performance Exhaust catalogue
Exhaust Manifold Gasket Front DSF002
Fits 112 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: DSF002

Viper Red motor 138/149/161/173/186/202 — Gasket 1 Performance Exhaust catalogue
Exhaust Manifold Gasket Front DSF009AX2
Fits 75 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: DSF009AX2

Viper Holden V8 253/308 — Gasket 1 Performance Exhaust catalogue
Exhaust Manifold Gasket & Bolt Kit Front DSF009AX2KIT
Fits 70 vehicles
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Vehicle: HQ Holden Sandman HQ    Part: DSF009AX2KIT

Viper Holden V8 253/308 — Gasket + hardware 1 Performance Exhaust catalogue
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The HX Holden (1976–1977) is a really important model in Holden history, and from a restoration point of view it’s very different to HQ/HJ in ways that catch people out.

The HX Holden marked a major turning point for Australian Holdens. Introduced in mid-1976, the HX brought ADR27A emissions compliance, significant engine changes, new interior details, and subtle exterior updates. While it looks similar to earlier H-series cars, restoring an HX correctly requires HX-specific parts knowledge.

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Whether you’re working on a Kingswood, Premier, Statesman, Sandman, One Tonner or Monaro GTS, this guide covers everything you need to restore an HX Holden properly — without wasting money on incorrect parts.

HX Holden Engines & Drivetrain

HX models are best known for their emissions-era engine changes, which directly affect parts availability and performance upgrades.

Factory Engine Options

  • 173ci Red Motor
  • 202ci Red Motor
  • 253ci V8 (low compression)
  • 308ci V8 (ADR27A compliant)

Important: HX engines use pollution gear and different cam profiles compared to HQ/HJ.

Engine Restoration Checklist

Six-Cylinder Engines (173 / 202)

  • Pistons, rings & bearings
  • ADR27A camshaft (or mild replacement)
  • Timing chain & gears
  • Oil pump
  • Water pump
  • Full gasket set
  • Stromberg carburettor rebuild kit
  • Intake & exhaust manifold gaskets
  • Engine mounts (HX-specific)

V8 Engines (253 / 308)

  • Low-compression pistons
  • Camshaft compatible with ADR27A heads
  • Timing set
  • Oil pump
  • Harmonic balancer
  • Quadrajet carburettor rebuild kit
  • Exhaust manifolds (HX-only in some cases)

Transmission & Differential (HX Holden)

Factory Gearboxes

  • 3-speed manual
  • 4-speed M20 / M21
  • Trimatic automatic
  • Turbo-Hydramatic 400 (308 V8)

Driveline Parts Checklist

  • Clutch kit & spigot bush
  • Gearbox rebuild kits
  • Shifter bushes
  • Tailshaft uni joints
  • Differential bearings & seals
  • Salisbury LSD centre (where fitted)

Fuel System & Cooling (HX-Specific)

HX Holdens run hotter than earlier models due to emissions tuning — cooling system condition is critical.

Fuel System

  • Replacement fuel tank
  • HX fuel sender unit
  • Ethanol-safe fuel hose
  • Mechanical fuel pump
  • Charcoal canister hoses

Cooling System

  • Radiator (HX-specific shroud design)
  • Fan shroud
  • Thermostat
  • Heater core
  • Correct emission-era hoses

Suspension, Steering & Brakes

Suspension

  • Upper & lower control arm bushes
  • Ball joints
  • Coil springs
  • Shock absorbers
  • Rear trailing arm bushes
  • Panhard rod bushes

Steering

  • Steering box rebuild kit
  • Tie rod ends
  • Idler arm
  • Rag joint

Brakes

  • Front disc brake kits
  • Rear drum rebuild kits
  • Master cylinder
  • Brake booster
  • Brake hoses

Bodywork, Rust & Exterior Trim

Common HX Rust Areas

  • Front chassis rails
  • Floor pans
  • Inner & outer sills
  • Rear quarters
  • Boot floor
  • Plenum chamber
  • Windscreen & rear window channels
  • Lower front guards

Exterior Parts Checklist

  • HX grille (unique insert style)
  • Headlight surrounds
  • Tail light lenses
  • Bumpers
  • Side mouldings
  • HX badges & scripts
  • Door handles
  • Full rubber seal kits

Interior Restoration (HX Differences)

HX interiors differ again from HQ/HJ, especially in trim patterns and safety features.

Interior Checklist

  • Seat frames & foam
  • Correct HX seat trim
  • Door cards (HX-only patterns)
  • Dash pad
  • Centre console
  • Instrument cluster refurbishment
  • Headlining
  • Carpet kits
  • Steering wheel restoration

Electrical System

Electrical Parts

  • Wiring loom
  • Headlight assemblies
  • Tail lights
  • Alternator upgrade
  • Starter motor
  • Voltage regulator
  • Fuse box restoration

Wheels, Tyres & Finishing Touches

Wheels

  • Steel wheels
  • GTS wheels
  • Period-correct alloys

Finishing Details

  • Engine bay decals
  • Correct fasteners
  • Under-bonnet detailing kits
  • Period accessories

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