PART GUIDES

Part Guides

Deep dives on individual parts: what drives price, how grades work, what fits what

SKWritten bySaurabh Kumar · Co-Founder & CTO

Saurabh Kumar

Co-Founder & CTO, Part Price Guide

Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.

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ASReviewed byAmbika Sharma · Co-Founder & COO

Ambika Sharma

Co-Founder & COO, Part Price Guide

12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.

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A car dashboard AC vent with temperature controls showing a vehicle air conditioning system that needs repair

Part Guides

AC Not Blowing Cold: Diagnosis & Repair Costs 2026

Car AC repair costs $150–$1,500 depending on the cause. Refrigerant recharge runs $150–$300, compressor replacement $600–$1,500. Six causes ranked by cost.

Aug 29, 202611 min read

Steam rising from an overheated car engine with the hood open showing the cooling system components

Part Guides

Car Overheating: Causes & Repair Costs in 2026

Car overheating repairs cost $150–$1,200 for cooling system fixes. Six causes ranked by cost, from a $150 thermostat to a $3,000 head gasket.

Aug 24, 202613 min read

Frustrated driver turning the ignition key in a car that will not start with dashboard warning lights illuminated

Part Guides

Bad Starter Symptoms: Diagnosis Guide 2026

A bad starter causes clicking, grinding, or total silence when you turn the key. Five symptoms to check, a tap test, and when to replace vs rebuild.

Aug 23, 202612 min read

Female mechanic using an automotive stethoscope to diagnose engine knocking sounds on a running engine

Part Guides

Engine Knocking: Causes and Repair Cost 2026

Engine knocking repair costs $0 to $5,000+ depending on the cause. Light pinging fixes run $0 to $400, while rod knock requires a $2,500 to $5,000+ rebuild.

Aug 23, 202615 min read

A driver turning the ignition key in a car that will not start, with dashboard warning lights illuminated.

Part Guides

Car Won't Start: Causes, Diagnosis & Repair Costs in 2026

Most no-start problems cost $150-$600 to fix. Dead batteries cause 60% of cases. Diagnosis flowchart, cause-by-cause costs, and when to use salvage parts.

Aug 22, 202613 min read

Mechanic installing a stainless steel anti-theft shield cage around a catalytic converter underneath a raised vehicle

Part Guides

Catalytic Converter Theft Prevention Guide (2026)

Protect your catalytic converter with anti-theft devices ($20–$500), smart parking habits, and insurance. See which vehicles are targeted most and why.

Aug 22, 202610 min read

An illuminated check engine light on a vehicle dashboard indicating a powertrain fault that requires diagnosis.

Part Guides

Check Engine Light Cost to Fix in 2026: Causes & Prices

Check engine light diagnosis costs $122–$233 and repairs range from $0 (loose gas cap) to $3,500+ (catalytic converter). Common causes, costs, and when to worry.

Aug 21, 202611 min read

A person searching for used auto parts on a laptop with a used alternator on the desk beside them in a home garage

Part Guides

How to Find Cheap Used Auto Parts Online in 2026

Compare 6 online sources for used auto parts, from Car-Part.com's 3,800+ yard network to eBay Motors buyer protection. Includes pros, cons, and pricing for each channel.

Aug 19, 202614 min read

A person using hand tools to remove a part from a vehicle at a self-service pull-a-part junkyard with rows of donor cars stretching into the background

Part Guides

Pull-A-Part vs Full-Service Junkyard: Prices, Pros & Cons

Self-pull yards save 30-60% over full-service junkyards. Compare prices, warranties, and convenience to pick the right yard for your next repair.

Aug 18, 202614 min read

Two used radiators of different sizes side by side showing different inlet positions and mounting tabs

Part Guides

Are Radiators Universal? Interchange Guide for Used Radiators

Radiators aren't universal — dimensions, ports, mounts, and trans cooler all vary by model. But platform siblings interchange. How to check fit.

Aug 17, 20268 min read

A split view showing ECM circuit board repair with a soldering iron on one side and a replacement engine control module in packaging on the other

Part Guides

ECM Repair vs Replace: When Each Makes Sense

ECM repair costs $200-$600, while replacement runs $298-$825 with a used or reman module. How to decide between repair and replacement based on failure type.

Aug 17, 202615 min read

An automatic transmission with the oil pan removed showing the valve body during a diagnostic inspection at an auto repair shop

Part Guides

Transmission Slipping in 2026: Signs, Causes & Cost

Transmission slipping repairs cost $150 for a fluid change to $3,200+ for a full replacement. Six symptoms, four causes ranked by severity, and when to scrap.

Aug 13, 202611 min read

A power steering pump and hoses under a vehicle hood with a visible fluid drip at a hose connection

Part Guides

Power Steering Fluid Leak: Causes & Repair Cost

Power steering leak repairs cost $150–$1,500 depending on the source. Hose leaks are cheapest, rack replacement is the most expensive. Full breakdown inside.

Aug 12, 202612 min read

Two alternators from different vehicles compared side by side showing mounting points and connectors

Part Guides

Can You Use an Alternator From a Different Car? Interchange Guide

Yes, many alternators interchange across vehicle models if the mounting, connector, amperage, and pulley match. Here's how to check compatibility using Hollander numbers and OEM cross-references.

Jul 3, 20266 min read