11mm Injection Pump (Bosch, Remanufactured) — ALH TDI Automatic Stock Replacement / 5-Speed Performance Upgrade

What it is
This is a Bosch 11mm injection pump (part number 038130107JX) for the VW 1.9L ALH TDI engine, sold remanufactured. "Remanufactured" here means every component except the outer case is new — reciprocating components, quantity adjuster (QA), wiring, hub, and head are all new, not reused. It ships with zero test miles.

Two distinct uses

• Automatic transmission ALH: This is the factory-spec pump size. Installing it is a stock replacement, not a performance upgrade.
• 5-speed manual ALH: The factory 5-speed pump is 10mm. Installing an 11mm pump on a 5-speed car is a performance upgrade, not a stock replacement.

Fitment

• 1999–2003 Mk4 VW Golf, ALH engine
• 1999–2003 Mk4 VW Jetta, ALH engine
• 1998–2003 Mk4 VW New Beetle, ALH engine

Pricing and core deposit

• The listed price includes a $300 refundable core deposit
• Core refund requires returning a rebuildable 11mm pump; a rebuildable 10mm pump core is refunded at only 50% of the 11mm core value

Warranty
12 months / 12,000 miles

Common questions

Is the 11mm pump a direct stock replacement? Only for automatic-transmission ALH cars, which came with an 11mm pump from the factory. On 5-speed cars, which came with a 10mm pump, installing the 11mm is an upgrade, not a stock match.

What does "remanufactured" mean for this pump? Everything except the outer housing is new — reciprocating internals, quantity adjuster, wiring, hub, and pump head. It is not a used or rebuilt-with-worn-parts unit.

Do I get the core deposit back if I only have a 10mm pump to return? Partially — a rebuildable 10mm core is credited at 50% of the 11mm core value, not the full $300.

What warranty does this pump carry? 12 months or 12,000 miles.