MCC Codes
5533

Automotive Parts and Accessories Stores

A guide for underwriters at ISOs and Acquirers onboarding MCC 5533 auto parts and accessories retailer merchants, covering risk assessment, fraud signals, and the underwriting questions that matter.
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Table of Contents
Overview
Business Types
Payment Processing Info
Key Risks & Concerns
Common Fraud Signals
Example Scenarios
Common Questions
Ongoing Monitoring
Useful Sources

Underwriting Cheat Sheet

If you're underwriting an auto parts retailer, MCC 5533 concentrates risk around card-not-present reseller fraud, core charge and return abuse, and high-value resale items like catalytic converters and wheels that attract stolen cards. Heavy online ordering and shipping to reshippers widen the dispute surface. Here's what to look for.

Key Information

This guide covers automotive parts and accessories stores, where high-demand resale items, core return handling, and card-not-present ordering drive both fraud and chargeback exposure.

Typical Business Types

Retail Parts Stores

#1
Walk-in counters selling parts and accessories to consumers and shops.

Online Parts Sellers

#2
Ecommerce stores shipping parts nationwide with high CNP volume.

Performance and Accessory Shops

#3
Sellers of wheels, audio, lighting, and aftermarket upgrades.

Payment Processing Information

Transaction Types

1

Counter Sale

In-store card-present purchase of parts or accessories.
2

Online Parts Order

Card-not-present order shipped to a customer or repair shop.
3

Core Charge and Refund

Deposit on a returnable part, refunded when the old core is returned.
4

Special Order Deposit

Partial payment to source a part not held in stock.
5

Wholesale Account Purchase

Recurring billing to repair shops with trade accounts.

Common Payment Methods

Credit and Debit Cards - Primary method in store and online
Trade Account Billing - Net terms or stored cards for repair shop customers
Digital Wallets - Contactless and online wallet checkout
Buy Now Pay Later - Installment options on higher-priced accessory orders
ACH for Wholesale - Bank transfers from established trade accounts

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5533

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Key Risks & Concerns

Fraud Risks

  • Stolen Card Resale Items - Fraud targeting catalytic converters, wheels, and electronics
  • Reshipper Fraud - Online orders sent to freight forwarders to mask buyers
  • Core Return Abuse - Claiming core refunds without returning a valid core
  • Friendly Fraud - Cardholders disputing delivered parts as not received
  • Card Testing - Small online part orders validating stolen card numbers

Regulatory Challenges

  • EPA Catalytic Converter Rules - Restrictions on sale and recycling of converters
  • State Core and Battery Laws - Core deposit and lead-acid battery handling rules
  • Right to Repair Requirements - Parts and information access obligations
  • DOT Parts Compliance - Safety standards on certain regulated components
  • Sales Tax and Resale Certificates - Exemption handling for trade buyers

Common Fraud Signals

High-Risk Item Order Spikes

Surges in converters, wheels, or electronics on new accounts.

Mismatched Ship and Bill Addresses

Orders billing one place and shipping to forwarders.

Frequent Core Refund Requests

Core credits issued without matching core returns.

Example Scenarios and Red Flags

Bulk Resale-Item Orders

Large quantities of high-theft parts on a consumer card.

Freight Forwarder Destinations

Shipments routed to known reshipping addresses.

Repeated Small Online Orders

Pattern consistent with card testing before a large hit.

Core Credit Without Returns

Refunds processed with no inventory of returned cores.

First-Time High-Value CNP Order

Large online order on a card with no history with the merchant.

Common Underwriting Questions

UW Tips Business

  1. Verify the storefront or ecommerce operation and inventory
  2. Confirm business licensing and resale tax registration
  3. Check whether the merchant handles regulated converter sales

UW Tips Financial

  1. Understand mixed in-store and card-not-present volume
  2. Review average ticket and high-value accessory categories
  3. Assess the share of wholesale trade account revenue

UW Tips Risk

  1. Examine core charge and refund controls
  2. Evaluate shipping and address verification practices
  3. Review chargeback reasons across CNP orders

UW Questions Business

  1. Do you sell mostly in store, online, or to repair shops?
  2. Which high-value or regulated parts do you carry?
  3. Do you hold a resale certificate and required licenses?

UW Questions Payments

  1. What share of sales is card-present versus online?
  2. How do you manage core charges and refunds?
  3. Do you bill trade accounts on stored cards or net terms?

UW Questions Fraud

  1. How do you screen high-theft item orders for fraud?
  2. Do you block or review shipments to freight forwarders?
  3. What address and identity checks run on large CNP orders?

UW Questions Compliance

  1. How do you comply with catalytic converter and core laws?
  2. How do you handle resale tax exemptions?
  3. Are you meeting right to repair obligations?

UW Questions Chargebacks

  1. What is your chargeback ratio and which items drive it?
  2. How do you prove delivery on shipped parts?
  3. How do you document core returns against refunds?

UW Questions Infrastructure

  1. Is your ecommerce platform integrated with fraud screening?
  2. How do you reconcile core deposits and refunds in inventory?
  3. Do you maintain delivery and signature records for disputes?

Ongoing Monitoring

Transaction Monitoring

  • Watch order spikes on high-theft part categories
  • Track core refunds against actual core returns
  • Flag shipments to forwarders and mismatched addresses

Compliance Checks

  • Maintain converter and core handling compliance records
  • Keep resale certificates and tax documentation current
  • Stay current on right to repair obligations

Security Updates

  • Use address verification and CVV checks on CNP orders
  • Apply velocity limits on high-risk item purchases
  • Deploy delivery confirmation and signature capture

Risk Assessment

  • Tighten review when high-theft parts trend upward
  • Address core refund leakage promptly
  • Reassess reshipper exposure on growing online volume

Merchant Communication

Help the retailer build fraud screening for high-theft parts and reshipper destinations. Share core charge controls that prevent refund leakage. Support delivery documentation that defends against card-not-present disputes.

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Useful Sources

Visa Merchant Data Standards Manual

PCI DSS Quick Reference

EPA Catalytic Converter Compliance Information

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