NU4 ✓ Factory-verified

Saturn · Regular Production Option

Emission system, California, LEV II plus

Years 2003–07 Models 3 Factory citations 5

Query this via API →

Also described as Emission system, California LEV2 plusEmission system, California, LEV2 plus

Also documented for BuickCadillacChevroletGMCHummerOldsmobilePontiac

Documented applications

Ion (2003–2007) →

• 2004–2007 ✓ Factory-verified internal
  ⛭ GM factory document — 2004 saturn ion rpo code list, p.1.

  ⛭ GM factory document — 2007 saturn ion rpo code list, p.1.

L-Series (2000–2005) →

• 2003–2005 ✓ Factory-verified internal
  ⛭ GM factory document — 2003 saturn l200 lw200 rpo code list, p.1.

  ⛭ GM factory document — 2005 saturn l300 lw300 rpo code list, p.1.

Vue — First generation (2002–2007) →

• 2007 ✓ Factory-verified internal
  ⛭ GM factory document — 2007 saturn vue awd rpo code list, p.1.

This page aggregates every documented appearance of NU4 in the Saturn reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.