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International 4300Lp Secondary Air Injection Pump Connectors

International 4300Lp Secondary air injection pump connectors

Starting at $27.95, AutoBuffy stocks 1 secondary air injection pump connectors from Standard Ignition. This connector carries power and signal between the vehicle's wiring harness and the air injection pump, which forces fresh air into the exhaust stream during cold starts to reduce emissions. A failed connector disrupts that circuit, triggering fault codes and failed emissions tests.

Signs your International 4300Lp needs a new secondary air injection pump connector

  • Check Engine light illuminated with stored codes P0410, P0411, P0412, P0418, or related secondary air injection fault codes
  • Secondary air injection pump fails to activate during cold-start warm-up cycle
  • Visible melting, burn marks, or corrosion on the connector body or terminals
  • Intermittent pump operation that clears on its own but returns in cold or wet conditions
  • Failed state or local emissions inspection due to secondary air system fault
  • Rattling or loose connector at the pump that causes the pump to cut in and out under vibration

Which secondary air injection pump connector should you buy for your International 4300Lp?

The main decision is whether to buy an OE-spec replacement connector pigtail, a repair connector kit with pre-soldered leads, or a universal weatherproof connector. Fit and terminal material matter most here — a loose or corroded connection will cause the same fault codes as the original failure. Match the pin count and connector housing style to your International 4300Lp's harness before ordering.

OE-spec replacement pigtail
Best for
Exact-fit drop-in repair with no splicing guesswork
What you get
Molded connector housing matching factory pin count, pre-attached wire leads, correct terminal plating
Repair connector kit (solder type)
Best for
Technicians who prefer a permanent, vibration-resistant splice
What you get
Bare connector shell with tinned copper terminals and heat-shrink solder sleeves included
Weatherproof universal connector
Best for
Budget repair or temporary fix when OE pigtail is unavailable
What you get
Generic sealed housing, requires terminal crimping and pin-count verification against your harness
Remanufactured harness section
Best for
Vehicles with widespread wiring damage beyond just the pump connector
What you get
Larger harness segment covering pump connector and nearby circuits, minimizes multiple splice points

Secondary air injection pump connectors brands we stock for your International 4300Lp

Standard Ignition
1 option · from $27.95

Replacing a secondary air injection pump connector on a International 4300Lp

Moderate⏱ 45 minutes – 1.5 hoursTerminal pick set (for releasing locking tabs)Wire strippers and crimping toolHeat gun (for heat-shrink solder sleeves)Electrical contact cleanerMultimeter (to verify circuit continuity before and after)

Disconnect the battery before starting, then unplug the damaged connector from the pump and cut the pigtail leads back to clean, undamaged wire. Splice in the replacement connector using solder-seal connectors or a crimped splice, then apply heat to shrink the seals. Reconnect the battery, clear stored codes with a scan tool, and verify the secondary air injection pump activates on the next cold start.

Frequently asked questions

How much does it cost to replace secondary air injection pump connectors on a International 4300Lp?
Parts start at $27.95 on AutoBuffy. A shop typically bills one hour of labor on top of the connector cost, though the total depends on connector accessibility on your International 4300Lp. Doing it yourself keeps the cost close to the part price alone, since the repair is mainly a splice or pigtail swap.
Can a bad secondary air injection pump connector cause a failed emissions test on a International 4300Lp?
Yes. A damaged or corroded connector breaks the circuit to the secondary air injection pump, preventing it from running during the cold-start cycle. The ECM logs a fault code, and most emissions test stations will automatically fail a vehicle with an active secondary air injection trouble code, regardless of how well the engine otherwise runs.
Is it safe to drive a International 4300Lp with a faulty secondary air injection pump connector?
Driving is generally safe in the short term — the secondary air injection system affects emissions, not engine protection. However, leaving the fault unrepaired keeps the Check Engine light on, which can mask other developing faults, and the vehicle will not pass emissions inspection until the circuit is restored and the code is cleared and verified.
Can I repair the connector terminals instead of replacing the whole connector on a International 4300Lp?
Sometimes. If only one terminal is bent or lightly corroded, cleaning with electrical contact cleaner and carefully re-tensioning the terminal with a pick tool may restore the connection. If the housing is cracked, melted, or multiple terminals are pitted, replacing the full connector pigtail is more reliable and prevents repeat failures.
What causes secondary air injection pump connectors to fail on a International 4300Lp?
Heat cycling near the exhaust and engine bay is the primary cause — repeated expansion and contraction degrades the plastic housing and loosens terminal retention over time. Road moisture and salt intrusion accelerate corrosion on the terminals. Wiring chafing against nearby brackets is another common cause that puts mechanical stress directly on the connector body.
Will replacing the connector fix the P0410 or P0418 code on a International 4300Lp?
It depends on root cause. If diagnostics confirm the connector is the open or short in the circuit, replacing it will clear the code after the ECM verifies pump operation. If the pump motor itself has failed, or if there is a fault in the relay or control module side of the circuit, the code will return even after a new connector is installed.

Shop secondary air injection pump connectors by year for the International 4300Lp

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Secondary air injection pump connectors for other International models

International 4400International 4100International 8600 TranStarInternational 4700LPInternational 4900International 4200LP