2017-2023 Chevy GMC Duramax L5P 6.6L Diesel EGR Delete Kit – Compatible with Silverado 2500/3500, Sierra 2500/3500 – EPA Compliant

✔30-day returns– Unused items in original packaging
✔Free returnsfor defective/wrong items (we cover shipping)
📦Customer pays return shippingfor non-defective items
⚠Non-returnable: Opened seals, custom-made parts
💰Refunds issuedwithin 14 days of return
🇺🇸48 states only(no international returns)

🛡️ 2-Year Limited Warranty
✔ Covered: Manufacturing defects, cracks, weld failures (2 years from delivery)
✖ Not Covered: Install errors, accidents, corrosion, modifications, racing abuse
⚠ Off-Road Use Only - Not EPA/CARB compliant for street vehicles

🔧 Exhaust & EGR System FAQs 🔧

1️⃣ CARB Certification Status

❓ Are your exhaust manifolds CARB certified?
📌 Not currently CARB certified
⚠️ Off-highway use only (California users assume compliance responsibility)

2️⃣ Cracked Exhaust Manifold Risks

❓ Can a cracked manifold cause engine issues?
✔️ Yes – potential problems include:

• Exhaust leaks
• Loss of backpressure
• Faulty O2 sensor readings
• Engine overheating
  🔧 Recommendation: Replace immediately to avoid further damage.

3️⃣ Performance Manifold Installation

❓ Can I install a performance manifold without tuning?
🔄 Possible, but not optimal
⚠️ May trigger P0171 (Lean Condition) due to altered airflow
💡 Pro Tip: ECU tuning recommended for best performance & efficiency.

4️⃣ EGR Valve Maintenance

❓ Should I clean or replace a clogged EGR valve?
🔧 For minor buildup: Cleaning may work
🔄 Severe clogging: Replacement needed
⛔ Stuck valve? Won’t function properly even after cleaning.

5️⃣ EGR Cooler Failure Signs

❓ What causes failure, and how do I detect it?
🔥 Common causes:

• Coolant contamination
• Carbon blockage
  🚨 Warning signs:
• White exhaust smoke
• Unexplained coolant loss
• Milky oil residue