Warranty Information

All products sold by HH Muffler are covered by manufacturer warranties. Below you'll find information about warranty coverage, claims process, and what's covered.

Manufacturer Warranties

Warranty coverage varies by brand and product. Here are the warranties offered by our major brands:

Premium Lifetime Warranties

Borla - Million Mile Warranty

Coverage: Lifetime warranty for as long as you own the vehicle
What's Covered: Defects in materials and workmanship
Exclusions: Damage from abuse, improper installation, or modifications
Notable: Industry's best warranty - million mile guarantee

MagnaFlow - Lifetime Warranty

Coverage: Lifetime warranty to original purchaser
What's Covered: Defects in materials and workmanship
Exclusions: Corrosion from road salt, improper installation
Materials: All stainless steel construction

Flowmaster - Lifetime Warranty

Coverage: Lifetime limited warranty
What's Covered: Manufacturing defects, weld failures
Exclusions: Surface rust, discoloration, installation damage
Note: Original purchaser only, proof of purchase required

Corsa - Lifetime Warranty

Coverage: Lifetime warranty
What's Covered: Materials and workmanship defects
Exclusions: Misuse, racing, improper installation
Sound Guarantee: Patented RSC technology guaranteed drone-free

Standard Warranties

Gibson - Lifetime Warranty

Coverage: Lifetime on stainless steel, 3 years on aluminized
What's Covered: Manufacturing defects

DynoMax - Limited Warranty

Coverage: Varies by product (1-3 years typical)
What's Covered: Defects in materials and workmanship

MBRP - Limited Lifetime Warranty

Coverage: Lifetime on stainless, 3 years on aluminized
What's Covered: Material and workmanship defects

Cherry Bomb - Limited Warranty

Coverage: 90 days to 1 year depending on product
What's Covered: Manufacturing defects

Emissions Components

Catalytic Converters (All Brands)

Federal Emissions Warranty: 2 years / 24,000 miles minimum
California (CARB) Warranty: 5 years / 50,000 miles
Coverage: Converter failure, substrate degradation
Note: Requires proper engine maintenance

Oxygen Sensors

Coverage: Typically 1 year
What's Covered: Sensor malfunction, electrical failure

What Warranties Cover

Covered Defects:

Manufacturing defects in materials
Weld failures or separations
Premature rust-through (stainless steel products)
Structural failures under normal use
Component malfunction (hangers, clamps, etc.)

NOT Covered:

Normal wear and tear
Surface rust or discoloration
Damage from improper installation
Modifications to the product
Racing or competition use (unless specified)
Damage from road debris or impact
Incorrect product selection for application
Installation labor costs

Making a Warranty Claim

Step 1: Contact HH Muffler

Before returning any product, contact us first:

Email: warranty@hhmuffler.com
Phone: 1-800-XXX-XXXX

Provide:

Order number or proof of purchase
Product brand and part number
Description of the problem
Photos showing the defect
Mileage and installation date

Step 2: Evaluation

Our warranty team will:

Review your claim and photos
Determine if issue is covered under warranty
Contact manufacturer if needed
Provide claim decision within 2-3 business days

Step 3: Return Authorization

If claim is approved:

We'll issue an RMA (Return Merchandise Authorization) number
Provide return shipping instructions
Send prepaid shipping label (for warranty claims)

Step 4: Inspection & Resolution

Once we receive the defective item:

Manufacturer inspects for warranty coverage
If approved: Replacement shipped immediately
If denied: We'll contact you with explanation and options
Typical turnaround: 5-10 business days

Warranty vs. Return Policy

Use Warranty Claim When:

Product has been installed and used
Defect appeared after installation
Outside 30-day return window
Product failed under normal use

Use Return Policy When:

Product is unused and unopened
Within 30 days of delivery
Wrong part ordered
Changed your mind

Installation & Labor Coverage

Important: Manufacturer warranties cover the product only, not installation labor.

What This Means:

If a warranty claim is approved, you'll receive a replacement part free
Labor to remove failed part and install replacement is not covered
This is standard across all exhaust manufacturers

Our Recommendation:

Consider purchasing installation from a professional shop. Many shops offer labor warranties on their work separate from parts warranty.

Transferability

Non-Transferable Warranties:

Most manufacturer warranties are to original purchaser only
Selling vehicle typically voids warranty
Exception: Some Borla warranties transfer with proof

Required Documentation:

Always keep:

Original purchase receipt
Installation date and mileage documentation
Product packaging and documentation

Warranty Service Options

Replacement Product:

Most common resolution
Identical or equivalent product shipped
No charge for replacement or shipping

Refund:

Available if replacement not wanted
Refund amount based on original purchase price
May be prorated for older products

Repair:

Rarely offered for exhaust products
Welding repairs generally not recommended
Replacement preferred for safety and performance

Aftermarket vs. OEM Warranties

Aftermarket Performance Warranties:

Often better than OEM (many lifetime warranties)
Direct manufacturer backing
Faster replacement process

OEM Replacement Warranties:

Typically 1-2 years
Must go through dealership
Higher cost, shorter warranty

Maintaining Your Warranty

Do's:

✓ Follow manufacturer installation instructions
✓ Use proper hardware and hangers
✓ Maintain proper engine operation
✓ Keep receipts and documentation
✓ Inspect exhaust system regularly

Don'ts:

✗ Modify or alter the product
✗ Use in racing/competition (unless specified)
✗ Ignore check engine lights
✗ Continue driving with exhaust damage
✗ Remove or tamper with emissions components

Extended Warranties

Most major exhaust brands already offer lifetime or long-term warranties. Extended warranties are typically unnecessary for quality exhaust products.

Questions About Warranties?

Our warranty specialists are here to help!

Warranty Claims: warranty@hhmuffler.com
General Questions: support@hhmuffler.com
Phone: 1-800-XXX-XXXX
Hours: Monday-Friday, 9AM-5PM EST

When contacting us, have your order number and product details ready for faster service.