Complete WB Holden Restoration Parts Checklist

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HQ Holden Statesman DeVille HQ

1971–1974 · Sedan
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Your vehicle: HQ Holden Statesman DeVille HQ Change
Years 1971–1974
Body Sedan
Doors 4
Seats 5

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Oils

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Type Viscosity Capacity Specification Brand Notes Where to Buy
Automatic Transmission Oil
Fits 91 vehicles
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Vehicle: HQ Holden Statesman DeVille HQ    Part: Automatic Transmission Oil

Dexron III (ATF) ~7.0-7.4 L (dry fill) Trimatic 3-speed automatic (from late HK/HT) Powerglide on earliest HK Castrol Transmax Dexron III / Penrite Dex III Trimatic dry-fill figure of ~7 L (converter + pan) is forum-sourced from Holden factory Trimatic diagnosis literature for the HQ generation a simple drain-and-refill from the pan takes considerably less (~3-4 L). Verify against a factory manual for the exact model.
Engine Oil (Six-Cylinder: 161/173/186/202)
Fits 68 vehicles
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Vehicle: HQ Holden Statesman DeVille HQ    Part: Engine Oil (Six-Cylinder: 161/173/186/202)

SAE 20W-50 4.5-5.0 L 161/173/186/202 ci Red motor (161/186 through HG 173/202 from HQ onward) Penrite Classic HPR30 20W-60 / Castrol Classic XL30 Six-cylinder capacity is a typical figure for this Red-motor family Radial Tuned Suspension (RTS) introduced drivetrain oils unchanged from HX. Verify exact figure for the specific engine capacity fitted against a factory manual.
Engine Oil (V8: 253/308)
Fits 57 vehicles
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Vehicle: HQ Holden Statesman DeVille HQ    Part: Engine Oil (V8: 253/308)

SAE 20W-50 4.3-5.2 L 5.0L (308) / 4.2L (253) Holden V8 Penrite HPR30 20W-60 / Penrite Classic Later factory service data (via Penrite lube guide) shows 4.3 L for early Commodore-era V8 refills rising to ~5.1-5.2 L in later revisions figure is consistent across the V8\'s long production run from HQ through to VS. Confirm exact figure for HK-HG-era 253/308 against a factory manual.
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The WB Holden was the final evolution of the long-running HQ-based platform, and while it looks similar to the earlier HZ, it’s mechanically and structurally different in several key areas. Available only as a Luxury Statesman, and commercial variants — including the WB Utility, Panel Van, One Tonner, and Cab Chassis — the WB is now highly desirable among restorers and collectors.

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Restoring a WB Holden requires model-specific knowledge, as many parts are WB-only or differ from HQ–HZ equivalents.

WB Holden Engine Options

By the WB era, Holden had refined its emissions-compliant engines and improved reliability.

Factory Engine Options

  • 202ci Blue Six
  • 253ci V8
  • 308ci V8

Important: Late WB models dropped the 308 due to emissions regulations, making factory 308 WBs particularly desirable today.

Engine Restoration Checklist

202ci Six-Cylinder

  • Pistons, rings & bearings
  • Timing chain & gears
  • Oil pump
  • Water pump
  • Full gasket set
  • Rochester carburettor rebuild kit
  • Engine mounts
  • Emissions hoses & vacuum fittings

253 / 308 V8

  • Low-compression pistons
  • Camshaft suited for emissions-era heads
  • Timing set
  • Oil pump
  • Quadrajet carburettor rebuild kit
  • Harmonic balancer
  • Engine mounts

Transmission & Driveline (WB Holden)

Factory Gearboxes

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

Driveline Checklist

  • Clutch kit & spigot bush
  • Gearbox rebuild kits
  • Shifter bushes
  • Tailshaft uni joints
  • Differential bearings & seals
  • Salisbury differential (often LSD on One Tonners)

Fuel System & Cooling

WB Holdens often lived hard commercial lives, so fuel and cooling systems are commonly neglected.

Fuel System

  • Replacement fuel tank
  • Fuel sender unit
  • Ethanol-safe fuel hose
  • Mechanical fuel pump
  • Charcoal canister & emissions plumbing

Cooling System

  • Heavy-duty radiator
  • Fan clutch
  • Thermostat
  • Heater core
  • Correct WB radiator hoses

Suspension & Chassis (WB-Specific)

WB vehicles were designed to carry loads, meaning suspension components differ significantly from passenger H-series cars.

Suspension Checklist

  • Heavy-duty front coil springs
  • Heavy-duty shock absorbers
  • Control arm bushes
  • Ball joints
  • Rear leaf springs
  • Shackle bushes
  • Panhard rod bushes

WB One Tonners/ cab chassis models use unique rear suspension components.

Steering & Brakes

WB Holdens benefit from the improved braking systems introduced late in the H-series lifecycle.

Steering

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

Brakes

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

Bodywork, Rust & Exterior Panels

Common WB Rust Areas

  • Chassis rails
  • Floor pans
  • Sills
  • Rear quarters (utes & vans)
  • Tray mounts
  • Windscreen channels
  • Firewall and plenum

Exterior Parts Checklist

  • WB grille
  • Headlight surrounds
  • Tail lights
  • Bumpers
  • Door handles
  • WB-specific badges
  • Full rubber seal kit

Interior Restoration (WB Commercial Trim)

WB interiors are utilitarian but increasingly rare in original condition.

Interior Checklist

  • Bench or bucket seats
  • Seat foam & trim
  • Door cards
  • Dash pad
  • Instrument cluster
  • Headlining
  • Rubber floor mats or carpet kits

Electrical System

Electrical Checklist

  • Engine bay wiring loom
  • Headlights & indicators
  • Tail lights
  • Alternator
  • Starter motor
  • Voltage regulator
  • Fuse box

Wheels, Tyres & Final Details

Wheels

  • Factory steel wheels
  • GTS-style wheels
  • Period-correct commercial rims

Finishing Touches

  • Engine bay decals
  • Fastener kits
  • Period accessories

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