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Parts Guide

Parts Guide

OEM vs. aftermarket comparisons, replacement intervals, and fair pricing for every major part

Engine Parts

Bosch 3330 Oxygen Sensor

OEM-quality upstream oxygen sensor for optimal fuel economy and emissions control.

Every 60,000–100,000 miles or when O2 sensor codes appear
Cost Breakdown
OEM Part
$45–$120
Aftermarket
$20–$60
Labor
$75–$150
✅ Recommended OEM
Bosch, Denso, Delphi
💰 Budget Aftermarket
Walker, Spectra Premium
Brake Parts

ACDelco Gold Brake Pads

Semi-metallic brake pads for everyday driving with excellent stopping power and pad life.

Every 30,000–70,000 miles depending on driving style
Cost Breakdown
OEM Part
$40–$80/axle
Aftermarket
$20–$50/axle
Labor
$100–$200/axle
✅ Recommended OEM
ACDelco, Akebono, Brembo
💰 Budget Aftermarket
Wagner, Power Stop, Raybestos
Fluids

Motorcraft MERCON V Transmission Fluid

Automatic transmission fluid for smooth shifting and transmission protection.

Every 30,000–60,000 miles
Cost Breakdown
OEM Part
$10–$15/qt
Aftermarket
$6–$12/qt
Labor
$120–$200 for flush
✅ Recommended OEM
Motorcraft, ACDelco, Honda ATF
💰 Budget Aftermarket
Valvoline, Castrol, Mobil 1
Engine Parts

NGK Iridium IX Spark Plug

Long-life iridium spark plugs for improved ignition performance and fuel efficiency.

Every 60,000–100,000 miles (iridium/platinum); 30,000 miles (copper)
Cost Breakdown
OEM Part
$8–$25 each
Aftermarket
$4–$15 each
Labor
$100–$300 set
✅ Recommended OEM
NGK, Denso, Champion
💰 Budget Aftermarket
Autolite, Bosch
Filters

K&N Engine Air Filter

High-flow cotton gauze air filter for improved airflow and reusable long-term service.

50,000 miles (K&N washable) or 15,000–30,000 miles (standard)
Cost Breakdown
OEM Part
$20–$60
Aftermarket
$10–$30
Labor
$20–$40
✅ Recommended OEM
K&N, Wix, Fram
💰 Budget Aftermarket
Purolator, ACDelco
Suspension

Monroe Quick-Strut Assembly

Complete strut assembly with spring, mount, and bearing for simplified installation.

Every 50,000–100,000 miles or when handling degrades
Cost Breakdown
OEM Part
$150–$400 each
Aftermarket
$80–$200 each
Labor
$150–$400 per axle
✅ Recommended OEM
KYB, Sachs, Bilstein
💰 Budget Aftermarket
Monroe, Gabriel, Detroit Axle
Fuel System

Delphi Fuel Pump Module

OEM-quality electric fuel pump and sending unit assembly for proper fuel delivery.

Every 100,000 miles or when fuel delivery symptoms appear
Cost Breakdown
OEM Part
$150–$400
Aftermarket
$60–$150
Labor
$200–$400
✅ Recommended OEM
Delphi, Denso, Carter
💰 Budget Aftermarket
Spectra Premium, Airtex
Electrical

Motorcraft Platinum Battery

AGM automotive battery with enhanced cold cranking amps for reliable starts.

Every 3–5 years or when battery test shows weakness
Cost Breakdown
OEM Part
$150–$250
Aftermarket
$80–$180
Labor
$20–$50
✅ Recommended OEM
Motorcraft, ACDelco, Optima
💰 Budget Aftermarket
DieHard, EverStart, Interstate

📋 Part Number Reference Guide

Use these resources to find the exact part number for your specific year/make/model:

RockAuto
Largest selection, catalog search by VIN or year/make/model
AutoZone Parts
Free store pickup, VIN-specific part lookup
NAPA Auto Parts
Professional-grade parts, cross-reference OEM numbers

❓ Car Parts FAQs

What is the difference between OEM and aftermarket car parts?

OEM parts are made by the same company that supplied the original parts for your vehicle. They guarantee exact fit and quality but cost more. Aftermarket parts are made by third-party manufacturers and are generally less expensive, though quality varies.

Are aftermarket car parts safe to use?

Yes, reputable aftermarket brands like Wagner, Bosch, Denso, and Monroe produce parts that meet or exceed OEM specs. Avoid unknown or extremely cheap brands, especially for safety-critical components like brakes and steering parts.

Where can I find the right part number for my car?

Use your VIN on sites like RockAuto, AutoZone, or NAPA to find exact part numbers. The part number is also printed on the old part itself.

How often should car parts be replaced?

Oil filters every 5,000–7,500 miles, air filters every 15,000–30,000 miles, brake pads every 30,000–70,000 miles, spark plugs every 30,000–100,000 miles, batteries every 3–5 years, and timing belts every 60,000–100,000 miles.

Do aftermarket parts void my car warranty?

Under the Magnuson-Moss Warranty Act, a dealer cannot void your warranty simply for using aftermarket parts. They can only deny a claim if the aftermarket part directly caused the failure. Use quality brands and keep receipts.

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