PACCAR (PCAR) Q3 2026 Earnings: Parts Growth Relies on Pricing

PACCAR (PCAR) Q3 2026 earnings showed a sharp jump in profit, but growth in its aftermarket parts business weakened in quality. The company released its results for the quarter ended September 30, 2026 on October 27, 2026 and filed its 10-Q the next day [1][2]. Going into the quarter, three questions mattered: whether deliveries would reach about 42,000 trucks, whether gross margin would hold at 14.4%-14.5%, and whether parts growth would clearly accelerate in the second half [4]. Deliveries came in at 40,100 trucks, slightly below guidance. The combined truck, parts and other gross margin was 14.5%, in line with guidance. Parts revenue grew only 3.2% year over year, and almost all of that came from higher prices [2][3]. Overall, the truck cycle recovery is on track with better per-truck profit, while the parts business is becoming a weaker profit cushion.

PACCAR is one of the world's major heavy-duty truck makers, with the Kenworth, Peterbilt and DAF brands, and sells almost all of its trucks to independent dealers. It also runs aftermarket parts and financial services businesses. Parts demand depends on the number, age and mileage of trucks in service [5].

Parts growth came from pricing, and the full-year outlook fell to about 3%

Parts revenue set a quarterly record, but the source of growth ran against the earlier thesis. Third-quarter parts revenue was $1.78 billion, up 3.2% year over year, compared with 1.4% growth in the first half [2]. The 10-Q revenue bridge shows that of the $55.4 million increase, average prices contributed $53.2 million and volume only $0.4 million, with lower sales volume in the U.S. and Canada [2]. U.S. and Canada parts revenue was $1,214.4 million, up 1.9%; Europe was $370.5 million, up 3.5% [2].

Profit did not grow with revenue. Parts pretax income was $404.4 million, down 1% year over year. Pretax return on revenues fell from 23.8% to 22.7%, and parts gross margin fell from 29.5% to 28.5% [2]. The 10-Q points to lower-margin direct ship sales and warehouse expansion costs [2].

The company lowered its full-year expectation. On the second-quarter call, management expected 2026 parts growth of 3% to 5%, toward the high end of the range [4]. The third-quarter 10-Q now says parts sales are expected to increase around 3% [2]. On the call, the president said the year would finish within the 3% to 5% range [3], so the two statements differ slightly. Based on 2025 parts revenue of $6.8737 billion, about 3% growth implies roughly 6% year-over-year growth in the fourth quarter. Growth near 5% would have meant about $140 million more revenue for the year.

Management's explanation for soft demand contradicts the earlier view that higher freight rates would lift truck utilization. The CEO said that enforcement of commercial driver's license (CDL) rules in 2026 pulled a lot of trucks out of service, so those trucks drove fewer miles and parts purchases were postponed [3]. The president said high diesel prices and driver costs have customers focused on required maintenance, and that mix has shifted toward all-makes parts [3]. These are qualitative management explanations. The company did not disclose how many trucks are out of service or when they might return.

Truck deliveries fell slightly short, but profit per truck improved sharply

Truck demand has turned into deliveries, but suppliers limited the ramp. Global deliveries were 40,100 trucks in the third quarter, up 26% year over year, and U.S. and Canada deliveries were 23,800, up 39% [2]. The CEO said deliveries were somewhat affected by supply constraints. Fourth-quarter delivery guidance is 41,000 to 43,000 trucks [3].

Higher prices lifted truck profit significantly. Truck gross margin rose from 5.8% a year earlier to 10.2%, and truck pretax income rose from $102.5 million to $454.5 million [2]. Average truck sales prices added $114.1 million, while average cost per truck fell by $21.1 million [2]. Management expects fourth-quarter gross margin to be roughly flat with the third quarter because of production inefficiencies from missing parts, not weaker pricing [3].

Conclusion

The quarter strengthened the case for the truck cycle recovery and weakened the case for parts as a profit cushion. Third-quarter revenue was $7.94 billion, up 19%, and net income was $847.5 million, up 44%, with the increase driven mainly by trucks [1]. Operating cash flow for the first nine months was $2.52 billion, above net income, but higher cash used for dealer wholesale financing and inventory left it about $750 million below the prior-year period [1][2].

Three pieces of evidence will test this view. The first is whether fourth-quarter parts revenue grows about 6% and North American parts volume turns positive. The second is whether deliveries reach 41,000 to 43,000 trucks. The third is the EPA's final decision on NOx compliance penalty (NCP) levels for 2027, which management says will affect early-2027 orders [3].

Sources

[1] PCAR 8-K filed 2026-10-27 · Q3 2026 press release (October 27, 2026, PACCAR, 8-K Exhibit 99.1 earnings release, https://www.sec.gov/Archives/edgar/data/75362/000119312526432729/pcar-ex99_1.htm) [2] PCAR 10-Q filed 2026-10-28 · MD&A (October 28, 2026, PACCAR, 10-Q Management's Discussion and Analysis, https://www.sec.gov/Archives/edgar/data/75362/000119312526436124/pcar-20260930.htm) [3] PCAR Q3 2026 earnings call 2026-10-27 (October 27, 2026, PACCAR, third-quarter earnings call, https://gateway.drillr.ai/mcp/private) [4] PCAR Q2 2026 earnings call 2026-07-28 · guidance (July 28, 2026, PACCAR, second-quarter earnings call, https://gateway.drillr.ai/mcp/private) [5] PCAR 10-K filed 2026-02-18 · parts segment (February 18, 2026, PACCAR, 10-K annual report, https://www.sec.gov/Archives/edgar/data/75362/000119312526057025/)