Brooks diesel performance 
Premium Mail‑In & Drop‑Off Mechanical Injector Rebuild Service

Tired of hazy idles, black smoke, and cheap Chinese injectors that melt pistons?
I built the custom injectors in my own 2nd Gen Cummins — clean 436 HP / 922 TQ with zero smoke.
I use that exact same precision, genuine parts, and micro‑calibration to rebuild your injectors.

Send me your engine type for an exact quote.

Engines Supported

If it’s a mechanical diesel injector, I rebuild it.

• Cummins 12‑Valve
• Cummins 24‑Valve VP44 mechanical
• Ford Powerstroke 6.9L & 7.3L IDI
• Detroit 6.2L & 6.5L
• Kubota
• Yanmar
• Perkins
• Isuzu
• Farm tractors
• Industrial equipment
• Generator sets

What’s Included in Every Rebuild

• Full Teardown & Inspection — every internal component checked
• Ultrasonic Cleaning — carbon & debris removed in a clean environment
• Micro‑Calibration — pop‑tested, shimmed, and spray‑verified
• New Seals & Washers
• Optional Nozzle Upgrades — OEM or performance
• Optional Flow‑Matching — precision-balanced sets

Transparent Pricing

(Labor pricing per injector. Nozzle cost varies by horsepower goals.)

Pricing & Packages — 6‑Cylinder Mechanical Injectors

• Labor Only

Starting at $50 per injector
Perfect for customers who want their current nozzles reused and only need cleaning, teardown, calibration, and pop‑testing.

• Standard Refresh Set

$300 total
Full clean, rebuild, and calibration using your existing nozzles.
This is the most common option for stock or lightly‑modified trucks.

• Full Upgraded Set

$600 total
Includes:

• Full rebuild labor
• Brand‑new OEM or Performance nozzles
Ideal for customers wanting more power, cleaner fueling, or replacing worn nozzles.

For 4‑cylinder pricing or custom nozzle sizes.

How the Mail‑In Service Works

1. Message Me — Tell me your engine, setup, and power goals
2. Ship Your Cores — Address provided after order
3. Rebuild & Calibrate — Cleaned, rebuilt, pop‑tested, and shimmed
4. Fast Return — Shipped back ready to bolt in

Turnaround time is typically 1–2 days once they arrive at my bench.

Why Choose Little Ray’s Mechanical Diesel Injectors

• Proven Results — Clean, smoke‑free power from real builds
• No Cheap Clones — Genuine components only
• Fast Turnaround — No weeks‑long downtime
• Honest Communication — Clear pop pressures & updates
• Precision Calibration — Built by someone who actually runs these injectors

Send me your engine type to get a fast quote.