There are 19 choices

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SILVERADO 1500 PICKUP
- 4.3L (VIN X, 8th digit)
- 4.8L (VIN V, 8th digit)
- 5.3L
  - VIN T (8th digit)
  - VIN Z (8th digit)
- 6.0L
  - VIN N (8th digit)
  - VIN U (8th digit)
    - CNG
    - gasoline
SILVERADO 2500 PICKUP
- 6.0L (VIN U, 8th digit)
  - CNG
  - gasoline
- 6.6L turbo diesel (VIN 1, 8th digit)
  - California
  - Federal
    - opt NF2
    - opt NF4
- 8.1L (VIN G, 8th digit)
SILVERADO 3500 PICKUP
- 6.0L (VIN U, 8th digit)
  - CNG
  - gasoline
- 6.6L turbo diesel (VIN 1, 8th digit)
  - California
  - Federal
    - opt NF2
    - opt NF4
- 8.1L (VIN G, 8th digit)

Engine Assembly for 2003 Chevrolet Silverado

Fits: SILVERADO 2500 PICKUP 6.6L turbo diesel VIN 1, 8th digit Federal opt NF4 (change)

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