Piper Warrior Parts Sourcing and Specification Guide

Piper Warrior parts encompass the specialized airframe components, powerplant accessories, landing gear assemblies, and electrical systems designed for the Piper PA-28-151 and PA-28-161 aircraft. Originally introduced to bring a high-aspect-ratio, semi-tapered wing to the venerable Cherokee lineage, the Warrior series has served for decades as a standard in flight training and personal cross-country transportation. Sourcing correct replacement components requires an understanding of exact serial-number breaks, engine model variants, and the governing Aircraft Maintenance Manual and Illustrated Parts Catalog (IPC).

Key Airframe and System Features

The transition from earlier rectangular-wing Cherokees to the PA-28-151 Warrior introduced distinct aerodynamic structures, control surfaces, and mounting geometries. Knowing which subassembly an item belongs to is critical when navigating an aircraft parts diagram or sourcing replacement hardware.

• Semi-Tapered Wing Structure: The Warrior airframe features tapered outer wing panels that require dedicated skins, ribs, ailerons, and flaps distinct from the constant-chord wings found on earlier PA-28 models. When ordering structural components, verify part numbers against the structural repair sections of the Aircraft Maintenance Manual.
• Powerplant Installations: While the PA-28-151 utilizes a 150-horsepower Lycoming O-320-E3D, the PA-28-161 Warrior II and III incorporate 160-horsepower Lycoming O-320-D2A or O-320-D3G engines. Cowlings, exhaust systems, baffles, and engine mounts vary according to the specific powerplant dash number installed.
• Electrical Architectures: Earlier PA-28-151 and PA-28-161 airframes operate on a 14 Volt direct-current system powered by belt-driven engine Alternators. Later production Warrior III models shifted to 28-volt systems, making electrical voltage verification a mandatory step before ordering relays, switches, or lighting equipment.
• Control Surfaces and Cables: The stabilator and anti-servo tab assemblies require exact cable tensions, trim drum assemblies, and hinge bushings detailed in the aircraft service manual to prevent control flutter and maintain trim authority.
• Landing Gear and Braking: Fixed landing gear struts rely on oleo-pneumatic shock absorbers with model-specific internal metering pins, scraper rings, and seals, paired with single-disc hydraulic brake calipers. Sourcing dedicated Airframe Parts requires cross-referencing strut casting numbers.

Specifications and Fitment by Serial Number

Piper parts fitment is heavily driven by manufacturer serial number blocks rather than model year. Sourcing hardware without referencing the aircraft serial number often leads to incorrect component selection.

Induction systems present common variations across the production run. Early airframes may utilize a metal air box housing replaceable filter elements, while later airframes feature redesigned housings that require specific Air Filters conforming to Piper service letters and airworthiness directives. Sizing and housing configurations are not interchangeable across all model years.

Landing gear wheel and brake specifications also shift across the series. Most Warrior models utilize Cleveland 40-86 series main wheel assemblies and 30-55 brake calipers, frequently using standard replacement discs such as the Brake Disc Aps 164-06406. Mechanics must check the installed wheel assembly nameplate before ordering discs, linings, or bearings, as field modifications and STCs can alter the baseline equipment.

Technical Comparison of Piper Warrior Models

The table below summarizes key technical specifications across the three primary production designations of the Piper Warrior series.

Typical Price Ranges and Cost Considerations

Maintenance costs for Piper Warrior components generally fall into three tiers: routine consumables, scheduled rotables, and airframe structural assemblies.

• Consumables and Hardware: Routine replacement items—such as copper crush washers, induction gaskets, oil filters, and valve cover gaskets like those found in a Lycoming Superior Gasket Set SL75439-1 75439-1—remain economical, generally ranging from $10 to $200. Standard 6.00-6 main gear and 5.00-5 nose gear Aviation Tires and tubes typically range from $120 to $350 depending on ply rating and compound.
• Rotables and Electrical Units: Overhauled alternators, starters, electric fuel auxiliary pumps, and magnetos generally range from $500 to $2,500. Sourcing rotables requires clarity on core return conditions and certification documentation (such as FAA Form 8130-3).
• Cockpit and Systems Upgrades: Modern panel retrofits involving modernized Avionics, engine monitors, and solid-state attitude indicators vary significantly, often representing investments from $3,000 to over $20,000 depending on installation scope and technical standard orders.

Top Brands and Manufacturers

When selecting parts for a Piper Warrior, sourcing from recognized original equipment manufacturers and FAA-PMA holders ensures compliance with technical standards.

For airframe hardware and structural fittings, Piper OEM parts provide baseline conformity to type certification drawings. For powerplant maintenance, genuine Lycoming and certified PMA manufacturers provide cylinders, valvetrain assemblies, and gasket sets. Braking and wheel hardware are dominated by Cleveland (Parker Hannifin) and APS, while ignition components rely on Slick