Why Upgrade Your Radiator?

Common OEM problems:

• Plastic end tanks cracking over time
• Reduced cooling efficiency
• Overheating in traffic or hot climates
• Internal corrosion and clogging

DNA Motoring Fixes That:

• Full aluminum core improves heat transfer
• Stronger construction eliminates plastic failure points
• Efficient cooling keeps temps stable
• Direct replacement with no modification required

Translation: your temp gauge stops trying to scare you.

Vehicle Fitment (GM GMT360 Platform)

Designed specifically for:

Chevrolet:

• Trailblazer (2002–2009)
• Trailblazer EXT (2002–2006)

GMC:

• Envoy (2002–2009)
• Envoy XL / XUV (2002–2006)

Engine:

• 4.2L Inline-6 (LL8)

【Construction】- Made from Prime Quality Full T-6061 Aluminum Construction Core; Light-weight, and Prime-Warmth Transferring Aluminum Options A Tube and Fin Design
【Prime Performance】- Improves Cooling Potency, Make Warmth Dissipation More Efficient to Save you Premature Engine Failure

Radiator Specifications

• Core Size: 26-1/2″ W x 18″ H x 1″ D
• Inlet Size: 1-5/16″
• Outlet Size: 1-9/16″
• Material: Full aluminum core

Built to handle heat better than stock.

What’s Included

• DNA Motoring aluminum radiator assembly

(Simple upgrade—big cooling improvement.)

【Core Dimensions】- 26-1/2″ W X 18″ H X 1″; 【Inlet/Outlet Diameter】- 1-five/16″ , 1-nine/16″

Key Features

• Full aluminum construction for superior cooling
• Direct OEM-style fitment
• Durable design for long-term reliability
• Improved coolant flow efficiency
• Lightweight compared to stock units

Performance Benefits

• Reduces engine operating temperatures
• Prevents overheating in traffic and hot weather
• Improves cooling system reliability
• Supports daily driving and light performance use

No more overheating. No more stress.

【Fitment】- Compatible with 05-09 Saab nine-7/x 4.2L / 02-09 Trailblazer 4.2L / 04-07 Rainier 4.2L / 02-09 Envoy, XL, XUV 4.2L / 03-08 Ascender 4.2L / 02-04 Bravada 4.2L

⚠️ What to Expect

• Better cooling than OEM (especially aging units)
• Not a miracle fix if:
  • Thermostat is bad
  • Water pump is failing
  • Fan clutch or electric fans are weak

Translation: fix the system, not just one part.

Installation Notes

• Direct bolt-on installation
• Inspect:
  • Hoses
  • Thermostat
  • Cooling fans
• Use proper coolant mix
• Bleed cooling system thoroughly

Install time: ~1–2 hours

【Installation】- OEM Replacement for the Stock Unit; Light-weight Direct Bolt-On OEM Fitment or Replacement

Why DNA Motoring Trailblazer Envoy radiator replacement ?

Because DNA Motoring:

• Offers affordable OEM-style cooling upgrades
• Uses durable aluminum construction
• Delivers real-world reliability improvements

Final Verdict

The DNA Motoring OEM-RA-2458 Aluminum Radiator is a smart upgrade for Trailblazer and Envoy owners—stronger, more reliable, and better at keeping your engine cool.

Because watching your temp gauge climb is not a hobby.