Genuine Delphi Upgrade Fuel Injectors 25323972 25323971 | 2000–2005 GM 3.1L 3.4L OHV (Set of 6)


Part Number: 25323972 25323971
Price:
$179.99

🚚 FREE Fast FedEx 2-Day Shipping

Estimated arrival by Wednesday, September 17

🕒 Orders placed now will ship today or next business day

💨 $42.95 FedEx Overnight – arrives by Tuesday, September 16

Description

Set of 6 upgraded OEM Delphi fuel injectors for GM 3.1L and 3.4L OHV engines. These units have been fully reconditioned and upgraded for optimized spray pattern and fuel atomization, providing improved throttle response and fuel economy over factory stock.

Why Upgrade to This Set?

  • Genuine Delphi 25323972 / 25323971 cores – not aftermarket clones
  • Precision flow matched to within ±2%
  • Ultrasonically cleaned, coil tested, pressure tested, and spray pattern verified
  • Optimized for clean atomization and fuel distribution
  • Includes new o-rings, filters, pintle caps – ready for installation

Common Injector Symptoms

  • Misfires, hesitation, or poor idle
  • Lean codes (P0171, P0300)
  • Hard starts or fuel smell
  • Poor fuel mileage

Compatible Engine Types

  • GM 3.1L OHV V6 (VIN J)
  • GM 3.4L OHV V6 (VIN E)

Direct Fitment – 2000 to 2005 3.1L 3.4L 

For most accurate fitment, please use our Search by Year, Make and Model tool on the homepage.

Warranty and Return Policy

Every injector set is backed by our Lifetime Warranty and 60-day no-hassle return policy. No core deposit required. No restocking fees. Buy with confidence.

🚚 FREE Fast FedEx 2-Day Shipping

Estimated arrival by Wednesday, September 17

🕒 Orders placed now will ship today or next business day

💨 $42.95 FedEx Overnight – arrives by Tuesday, September 16

See full shipping speed details

60-Day Returns – Zero Hassle
We accept any return within 60 days — no RMA required, no restocking fees, and no questions asked. Install it, test it, keep running it. If you’re not completely satisfied, just send them back.

✔ Fully refundable, even if used
✔ No RMA. No restock fees. No hassle.
See full refund policy ✔ Backed by our lifetime replacement warranty

All injectors are backed by our lifetime replacement warranty.

Read full warranty details

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