Questions and Answers
Updated
A PDF document (49 KB) attached to OEM Caterpillar D-398 Engine Overhaul Kit, from the US Coast Guard. Due Nov 5, 2026, 3:00 PM (UTC-5).
File name: 52000QR270000209 Q and A.pdf
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52000QR270000209
Questions and Answers
Q1. We have found issues quoting the following parts from Caterpillar for the D-398 Overhaul Kit. Will you advise?
10R-7754 engine kit
discontinued.
5N-3392 shut off
discontinued.
5R-4630 tube
discontinued.
0R-2536 crankshaft
This is made as ordered.
6L-8761 sleeve
none on hand.
6V-5467 gasket kit
none on hand.
0R-5842 turbo
none on hand.
0L-1143
has been superseded by 261-5615.
0S-1588
has been superseded by 165-3928.
0S-1590
has been superseded by 165-3932.
3P-0649
has been superseded by 109-2332.
4W-2568
has been replaced by 3 parts. 4W-2566, 4W-2606, and 5L-2903.
A1. See below:
10R-7754 engine kit - individual parts that make up the engine kit should be available based on market research and previous purchases. Availability of these parts have been found to be non-issue.
5N-3392 shut off
- if it can be sourced, please quote. If not, please clearly state on your quote. This part is also a repairable part in CG stock if identified as an action needed. 5R-4630 tube
- if it can be sourced, please quote. If not, please clearly state on your quote. This part can be re-used or made in-house if identified as an action needed. 0R-2536 crankshaft - Crankshafts are an issue. The Government has offered to compensate the required delivery date for longer than average lead times. Please clearly state the lead time on your quote.
6L-8761 sleeve
-If backordered, please clearly state the lead time on your quote.
6V-5467 gasket kit
-If backordered, please clearly state the lead time on your quote.
0R-5842 turbo
-If backordered, please clearly state the lead time on your quote.
0L-1143
acceptable.
has been superseded by 261-5615. The authorized OEM alternative part is
0S-1588
acceptable.
has been superseded by 165-3928. The authorized OEM alternative part is
0S-1590
acceptable.
has been superseded by 165-3932. The authorized OEM alternative part is
3P-0649
acceptable.
has been superseded by 109-2332. The authorized OEM alternative part is
4W-2568
has been replaced by 3 parts. 4W-2566, 4W-2606, and 5L-2903. The authorized OEM alternative parts are acceptable.
Q2. Are non-OEM part substitutions acceptable for discontinued parts? A2. Non-OEM part substitutions/alternatives will not be allowed. Only OEM Caterpillar parts or OEM remanufactured parts as specified from the SOW and attached parts list are authorized. The Government acknowledges the report of the limited stock availability/discontinued parts status from the manufacturer. The Statement of Work
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