Standard Ignition Distributor Cap P/N:LU-439
Keep spark jumping cleanly to every cylinder with the Standard Ignition Distributor Cap LU-435. It drops in as a direct-fit replacement for the listed applications — the 1974 Jaguar V12 (V12-5.3L) and the 1982-1992 Jaguar XJS (V12-5.3L) — distributing high-voltage current from the rotor out to each spark plug wire in firing order.
Note that the ignition rotor, spark plug wires, gaskets, and instructions are not included. Over time a distributor cap can crack, collect moisture, or develop carbon tracking and corroded terminals; if a failed cap is behind your misfires, rough running, or hard starting, this replaces it. Country of origin: United Kingdom.
Interchange: C727 · CAPB10617 · EP869 · 19017099 · DAC4168 · DAC4168K · GDC144 · DDB128 · Manufacturer part number LU-435 (also LU435)
This part cross-references / interchanges with the following part numbers:
What does this distributor cap do?
It routes high-voltage current from the rotor to each spark plug wire in firing order, delivering spark to the cylinders. It has 13 contact terminals and a vertical tower layout.
Which vehicles does the LU-435 fit?
It is a direct-fit replacement for the 1974 Jaguar V12 and the 1982-1992 Jaguar XJS, both with the V12-5.3L engine. Check the Buyer's Guide tab to confirm your vehicle.
Does it include a rotor, plug wires, or gaskets?
No. The ignition rotor, spark plug wires, gaskets, and instructions are not included. Mounting screws are included.
What is the cap made of?
The body is glass/mineral reinforced polyester resin with high dielectric strength to help reduce carbon tracking and resist electrical breakdown. It uses aluminum contact terminals.
What are signs the cap may need replacing?
Cracks, moisture inside, carbon tracking, or corroded terminals can cause misfires, rough idle, and hard starting. Diagnose the cause first; if the cap is at fault, this replaces it.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.