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Jaguar XJS Fuel Injector Harness DAC3718
Jaguar XJS Fuel Injector Wiring Loom Harness DAC-3718

Jaguar Fuel Injection Hose Jaguar XJS V12 Fuel Injector Hoses Set (12)
Jaguar Fuel Injection Hose Jaguar XJS V12 Fuel Injector Hoses & Sleeves Set (12/24)
Jaguar Fuel Injector Seal Jaguar XJS V12 Fuel Injector Seal Set (24)
Jaguar Fuel Injection Rebuild Kit Jaguar XJS V12 Fuel Injection Rebuild Set (12/24/24)
Jaguar DAC3718 Jaguar XJS V12 Fuel Injector Harness 85-90
Jaguar DAC1930 Jaguar XJS V12 Fuel Injector Harness 80-84
Jaguar C45650 Jaguar XJS V12 Fuel Injector Harness pre-HE
Jaguar DAC2689 Jaguar XJS V12 Engine Wiring Harness 81-89.5
Air/Fuel Ratio System Air/Fuel Ratio Monitoring System
Jaguar Fuel Injection Hose Guide Fuel Injection Hose Guide - Read It!
Jaguar Copyright, Prices and Shipping Notice
Jaguar XJ12 XJS V12 Fuel Injection Hose
Fuel Injection Hose Set
for Jaguar XJS V12 & XJ12

Before you turn that ignition key to start your V12, I have a question for you. When did you last replace those Fuel Injection Hoses? Don't know? If it was more than five years ago you should replace them now.

This is a set of 12 Fuel Injector Hoses that are pre-cut to the correct length for your V12.

Temperature range of -290F to +3020F, with a burst pressure rating of 900 psi. This special hose handles leaded, unleaded, alcohol-added, diesel and extended gasolines, resisting sour gas oxidation. Conforms to SAE 30R9 - Made in USA - Tube Construction: Fluoroelastomer - Reinforcement Construction: Two-spiral Polyester - Cover Construction: CSM - this is the only Fuel Injection Hose that you should buy.

Correct hose wall thickness for sleeve installation.

Fits Jaguar XJS V12 HE 5.3 and XJ12.

Read the FI Guide before buying.

Price $26/set of 12

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Jaguar XJ12 XJS V12 Fuel Injection Hose and Ferrules/sleeves EAC7876
Fuel Injection Hose Set
with Hose Ferrules/Sleeves
for Jaguar XJS V12 & XJ12

As above - This is a set of 12 Fuel Injector Hoses that are pre-cut to the correct length for your V12 and 24 hose ferrules (mandatory on HE fuel hose replacement). For square fuel rails only.

New Ferrules/Sleeves must be used on HE fuel rails and injectors - never use clamps!

Read the FI Guide before buying.

Price $52/set - 12 hoses/24 sleeves

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Jaguar XJ12 XJS V12 Fuel Injector Seals
Fuel Injector Seal Set
for Jaguar XJS V12 & XJ12

This is a set of 12 big Fuel Injector Seals and 12 small Fuel Injector Seals for your 5.3 litre V12.

Provides an air-tight seal preventing vacuum leaks.

Read the FI Guide before buying.

Price $52/set of 24

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Jaguar XJ12 XJS V12 Fuel Injection Hose and Ferrules/sleeves EAC7876
Jaguar XJ12 XJS V12 Fuel Injector Seals

Fuel Injection Rebuild Set
with Hose Ferrules/Sleeves and Seals
for Jaguar XJS V12 & XJ12

As above - This is a set of 12 Fuel Injector Hoses that are pre-cut to the correct length for your V12 and 24 hose ferrules (mandatory on HE fuel hose replacement) and a set of seals. For square fuel rails only.

New Ferrules/Sleeves must be used on HE fuel rails and injectors - never use clamps!

Read the FI Guide before buying.

Price $98/set - 12 hoses/24 sleeves/24 seals

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Jaguar XJ12 XJS V12 Fuel 
Injection Connectors Set
Fuel Injection Connectors Repair Set
for Jaguar XJS V12 & XJ12

This is a complete set of 12 Fuel Injection Connectors with 12 pins for crimping your wires and 12 boots to seal out moisture.

No cheap junk! Far superior to anything else available - the same we use in the v12s Jaguar XJS V12.

Proper spring-loaded connectors for a perfect fit - the best that you can buy.

Fits Jaguar XJS V12 HE 5.3 and XJ12.

Read the FI Guide before buying.

Price $ NLA
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Jaguar XJ12 XJS V12 Fuel Injection Wiring Loom Harness DAC3718
Fuel Injection Harness
for Jaguar XJS V12

Teflon-coated stranded wires rated at 3920F with harness sleeving rated at 6000F - not even your V12 Jaguar can melt this!

No cheap junk! Far superior to anything else available.

Proper Jaguar and Bosch connectors for a perfect fit - the best that you can buy.

Injector connectors labelled for worry-free easy installation.

Fits Jaguar XJS V12 HE 5.3 UP TO VIN 178467 - check your VIN Number before purchase.

Installation instructions are included.

Lifetime warranty (from 1/1/2007) - if it breaks it will be replaced for free!

Price $498

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Jaguar XJS V12 Fuel Injection Wiring Harness Loom
Fuel Injection Harness
for Jaguar XJS V12

Teflon-coated stranded wires rated at 3920F with harness sleeving rated at 6000F - not even your V12 Jaguar can melt this!

No cheap junk! Far superior to anything else available.

Proper Jaguar and Bosch connectors for a perfect fit - the best that you can buy.

Injector connectors labelled for worry-free easy installation.

Fits Jaguar XJS V12 HE 5.3 UP TO VIN 114440 - check your VIN Number before purchase.

Installation instructions are included.

Lifetime warranty (from 1/1/2007) - if it breaks it will be replaced for free!

Price $498

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Jaguar XJS V12 pre-HE Fuel Injection Wiring Harness Loom
Fuel Injection Harness
for Pre-HE Jaguar XJS

Fuel Injection Harness for Pre-HE XJS 1976-1979.

Price $598

Harness for Jaguar XJS

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Jaguar XJ12 XJS V12 Engine Wiring Harness Loom DAC2689
Engine Wiring Harness
for Jaguar XJS V12 & XJ12
Replaces DAC2689

Engine wiring harness fits Jaguar XJS V12 HE 5.3 and XJ12 Series 3 1981-1989.5 V12 UP TO VIN 157117 - check your VIN Number before purchase - Replaces Jaguar Part Number: DAC2689.

This is NOT the fuel injection harness - this harness connects to the ignition and sensor components.

Installation instructions are included.

Lifetime warranty (from 1/1/2007) - if it breaks it will be replaced for free!

Price $398

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Air/Fuel Ratio Monitoring System
Air/Fuel Ratio Monitoring System

FYI - What is it, what does it do and why do you need this?

These are Air to Fuel Ratio Warning Systems for fuel injected cars.

They measure the amounts of air and fuel that leave your engine after the combustion process.

There is an optimum ratio of air and fuel that is required by all combustion engines - performance and/or economy tuning may change this slightly.

So, why is this a warning system?

If you have a non-firing spark plug, unburnt fuel will enter your exhaust system and catalytic converter.

If a fuel injector remains stuck open, unburnt fuel will enter your exhaust system and catalytic converter.

Either of the above scenarios is very bad as the unburnt fuel will combust inside your catalytic converter and raise the temperature to a point where your car may catch on fire.

Here's some symptons that may be a warning sign:

  • Your car starts fine but runs a little rough.
  • After driving for a minute or two you notice a strong fuel smell.
  • The fuel smell may disappear after driving for about 5 or 10 minutes.
  • You can't find any external fuel leaks.
  • You or your passenger notices a very warm carpet area.
  • Infrared temperature measurements indicate that one catalytic converter is running at considerably higher temperature than the other.

These Air and Fuel Ratio Warning Systems will indicate which side of your engine has a problem.
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