null
Google thinks we are exceptional!
We are ranked as a Google Top Quality Store
Same Day Shipping
When you order by 4pm (may exclude wiring)
Free DHL Shipping to Australia
On web orders over $500 for retail customers
Same Day Click & Collect
When you order by 4pm the same day

Bosch 381cc High Resistance Fuel Injector

SKU:
INJBOS381S_SZ0O
Quantity Unit Price (Inc GST)
1 + $97.50 ($112.13)
10 + $92.63 ($106.52)
20 + $87.75 ($100.91)
30 + $85.31 ($98.11)
  • Bosch 381cc High Resistance Fuel Injector 0 280 158 051
  • 381S 0280158051 Measurements
  • 381S 0280158051 Injector Tip
  • 381S 0280158051 Top Down
  • 381S 0280158051 Side

Not sure you have the right injectors?

Try our brand new injector calculator

Click this banner or scroll down to our new Injector Calculator. 6 quick questions about your application and we will find you a set of flow-tested injectors, matched within 1% from our range in stock.

Not sure you have the right injectors?

Try our brand new injector calculator

Click this banner or scroll down to our new Injector Calculator. 6 quick questions about your application and we will find you a set of flow-tested injectors, matched within 1% from our range in stock.
$97.50 ($112.13) Excl. GST (Incl. GST)
Unit of Measure:
each
Purchase Increment:
1
Minimum Purchase:
1 unit
We ship worldwide at competitive pricing. Shipping calculated at checkout.

Frequently bought together:

Description

Bosch 381cc Stubby High Resistance Fuel Injector

Dynamically flow tested in New Zealand by us, Motorsport Electronics (MSEL), so your set of injectors is matched within 1% across the entire set.

  • Measures 39mm from Middle-of-Top O-Ring to Middle-of-Bottom O-Ring
  • Measures 11mm from Top-of-Bottom O-Ring to Tip-of-Injector
  • 14mm Top and Bottom O-Ring
  • Full injector deadtime/battery compensation information is supplied with each set of injectors
  • Modern design offering extremely good idle control
  • Suitable for use with ethanol, methanol as well as most oil based fuels
  • Unmodified Bosch injector
  • Factory Injector for Holden 6.0L engines
View AllClose

Injector Calculator

MSEL Injector Calculator

Not sure what size injector you need?

Answer 6 quick questions and we will match you to a flow tested set of injectors from our range.

Takes less than a minute with in-stock results, all individually flow tested before shipping

Example Result - your results may vary
466 cc/minper injector
500 KW| 4 CYL| PETROL| NA| 4 BAR
  • Xspurt 1170cc Stubby
    RECOMMENDED
  • Xspurt 1000cc Stubby
    BORDERLINE
  • Bosch 1550cc Stubby
    OVER-SIZED
Step 1 of 4 — Engine
How many cylinders does your engine have?
cylinders
Step 2 of 4 — Fuel & Induction
What fuel are you running?
What type of induction does your engine use?
Step 3 of 4 — Pressure & Duty Cycle
What fuel pressure are you running?
bar

4.0 bar = 58 PSI

What is your maximum injector duty cycle?
%

ℹ We recommend a maximum below 80% to leave headroom for tuning. Different applications might want to see a lower duty cycle (ie 65%). This is best discussed with your engine builder and/or tuner.

What is your target lambda?
λ

ℹ Lower lambda = richer mixture = more fuel required. Default is set based on your fuel & induction selection. Adjust if you know your target.

Step 4 of 4 — Power Target
What is your target engine power?
—
cc/min
per injector
× cylinder
Calculation Inputs
Cylinders —
Fuel —
Induction —
Fuel Pressure —
Max Duty Cycle —
Target Lambda —
Target Power —
Injector Flow @ 4.0 bar Duty Cycle Status
⚠ Fitment Note: Before purchasing, please confirm that the injector body length (Stubby / Medium / Long / Full) and electrical connector type are compatible with your engine's fuel rail and wiring harness. Consult your engine builder or tuner if unsure.

Related Products

Related Products

Bosch 440cc High Resistance Fuel Injector. INJBOS440F.

Bosch 440cc High Resistance Fuel Injector

$97.50 ($112.13) - $106.50 ($122.48) Excl. GST (Incl. GST)
Bosch 440cc High Resistance Fuel Injector Twin spray pattern making it ideal for multi-valve applications. Traditional full length fuel injector with 14mm o-rings on both ends Ideal for Ford Falcon...
INJBOS440F
$97.50 ($112.13) - $106.50 ($122.48) Excl. GST (Incl. GST)
Quick view Choose Options
genuine Bosch 1550cc High Resistance Fuel Injector

Bosch 1550cc High Resistance Fuel Injector

$209.00 ($240.35) - $233.00 ($267.95) Excl. GST (Incl. GST)
Genuine Bosch 1550cc fuel injector A great solution for those looking for an unmodified injector that flows over 1000cc per minute. We purchase these injectors directly from Bosch Motorsport...
INJBOS1550S
$209.00 ($240.35) - $233.00 ($267.95) Excl. GST (Incl. GST)
Quick view Choose Options
Bosch 347cc long pintle fuel injector

Bosch 347cc High Resistance Fuel Injector with Long Pintle

$92.50 ($106.38) - $131.50 ($151.23) Excl. GST (Incl. GST)
Bosch 347cc High Resistance Fuel Injector with Long Pintle Dynamically flow tested in New Zealand by us, Motorsport Electronics (MSEL), so your set of injectors is matched within 1% across the entire...
INJBOS347L
$92.50 ($106.38) - $131.50 ($151.23) Excl. GST (Incl. GST)
Quick view Choose Options
Bosch 731cc long pintle fuel injector 0280158112

Bosch 731cc High Resistance Fuel Injector with Long Pintle

$92.50 ($106.38) - $131.50 ($151.23) Excl. GST (Incl. GST)
Bosch 731cc High Resistance Fuel Injector with Long Pintle Dynamically flow tested in New Zealand by us, Motorsport Electronics (MSEL), so your set of injectors is matched within 1% across the entire...
INJBOS731L
$92.50 ($106.38) - $131.50 ($151.23) Excl. GST (Incl. GST)
Quick view Choose Options
Bosch 1000cc long nose fuel injector 0280 158 040

Bosch 1000cc High Resistance Long Nose Stubby Fuel Injector

$97.50 ($112.13) - $136.50 ($156.98) Excl. GST (Incl. GST)
Bosch 1000cc long nose unmodified fuel injector Dynamically flow tested in New Zealand by us, Motorsport Electronics (MSEL), so that your set of injectors is flow matched within 1% across the entire...
INJBOS1000L
$97.50 ($112.13) - $136.50 ($156.98) Excl. GST (Incl. GST)
Quick view Choose Options

Why buy from us?

Genuine Quality
Motorsports Products
Experts In The Field
We know our stuff
Established Since 2004
We have 20 years in business
Fast Worldwide Shipping
We don't drop ship